Allow customizing the color of preview scrollbar via 'preview-scrollbar'

4 files changed, 186 insertions, 164 deletions

diff --git a/man/man1/fzf.1 b/man/man1/fzf.1
index 82a9b6ff..1ff1fe03 100644
--- a/man/man1/fzf.1
+++ b/man/man1/fzf.1
@@ -433,28 +433,30 @@ color mappings.
     \fBbw      \fRNo colors (equivalent to \fB--no-color\fR)
 
 .B COLOR NAMES:
-    \fBfg              \fRText
-      \fBpreview-fg    \fRPreview window text
-    \fBbg              \fRBackground
-      \fBpreview-bg    \fRPreview window background
-    \fBhl              \fRHighlighted substrings
-    \fBfg+             \fRText (current line)
-    \fBbg+             \fRBackground (current line)
-      \fBgutter        \fRGutter on the left
-    \fBhl+             \fRHighlighted substrings (current line)
-    \fBquery           \fRQuery string
-      \fBdisabled      \fRQuery string when search is disabled (\fB--disabled\fR)
-    \fBinfo            \fRInfo line (match counters)
-    \fBborder          \fRBorder around the window (\fB--border\fR and \fB--preview\fR)
-      \fBseparator     \fRHorizontal separator on info line
-      \fBscrollbar     \fRScrollbar
-    \fBlabel           \fRBorder label (\fB--border-label\fR and \fB--preview-label\fR)
-      \fBpreview-label \fRBorder label of the preview window (\fB--preview-label\fR)
-    \fBprompt          \fRPrompt
-    \fBpointer         \fRPointer to the current line
-    \fBmarker          \fRMulti-select marker
-    \fBspinner         \fRStreaming input indicator
-    \fBheader          \fRHeader
+    \fBfg                  \fRText
+      \fBpreview-fg        \fRPreview window text
+    \fBbg                  \fRBackground
+      \fBpreview-bg        \fRPreview window background
+    \fBhl                  \fRHighlighted substrings
+    \fBfg+                 \fRText (current line)
+    \fBbg+                 \fRBackground (current line)
+      \fBgutter            \fRGutter on the left
+    \fBhl+                 \fRHighlighted substrings (current line)
+    \fBquery               \fRQuery string
+      \fBdisabled          \fRQuery string when search is disabled (\fB--disabled\fR)
+    \fBinfo                \fRInfo line (match counters)
+    \fBborder              \fRBorder around the window (\fB--border\fR and \fB--preview\fR)
+      \fBscrollbar         \fRScrollbar
+      \fBpreview-border    \fRBorder around the preview window (\fB--preview\fR)
+      \fBpreview-scrollbar \fRScrollbar
+      \fBseparator         \fRHorizontal separator on info line
+    \fBlabel               \fRBorder label (\fB--border-label\fR and \fB--preview-label\fR)
+      \fBpreview-label     \fRBorder label of the preview window (\fB--preview-label\fR)
+    \fBprompt              \fRPrompt
+    \fBpointer             \fRPointer to the current line
+    \fBmarker              \fRMulti-select marker
+    \fBspinner             \fRStreaming input indicator
+    \fBheader              \fRHeader
 
 .B ANSI COLORS:
     \fB-1         \fRDefault terminal foreground/background color
diff --git a/src/options.go b/src/options.go
index 27e32d13..ba84c8b4 100644
--- a/src/options.go
+++ b/src/options.go
@@ -888,10 +888,14 @@ func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme {
 				mergeAttr(&theme.CurrentMatch)
 			case "border":
 				mergeAttr(&theme.Border)
+			case "preview-border":
+				mergeAttr(&theme.PreviewBorder)
 			case "separator":
 				mergeAttr(&theme.Separator)
 			case "scrollbar":
 				mergeAttr(&theme.Scrollbar)
+			case "preview-scrollbar":
+				mergeAttr(&theme.PreviewScrollbar)
 			case "label":
 				mergeAttr(&theme.BorderLabel)
 			case "preview-label":
diff --git a/src/terminal.go b/src/terminal.go
index d108bfd9..fadfd6c4 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -1930,7 +1930,9 @@ func (t *Terminal) renderPreviewText(height int, lines []string, lineNo int, unc
 func (t *Terminal) renderPreviewScrollbar(yoff int, barLength int, barStart int) {
 	height := t.pwindow.Height()
 	w := t.pborder.Width()
+	redraw := false
 	if len(t.previewer.bar) != height {
+		redraw = true
 		t.previewer.bar = make([]bool, height)
 	}
 	xshift := -1 - t.borderWidth
@@ -1947,7 +1949,7 @@ func (t *Terminal) renderPreviewScrollbar(yoff int, barLength int, barStart int)
 
 		// Avoid unnecessary redraws
 		bar := i >= yoff+barStart && i < yoff+barStart+barLength
-		if bar == t.previewer.bar[i] && !t.tui.NeedScrollbarRedraw() {
+		if !redraw && bar == t.previewer.bar[i] && !t.tui.NeedScrollbarRedraw() {
 			continue
 		}
 
@@ -1956,7 +1958,7 @@ func (t *Terminal) renderPreviewScrollbar(yoff int, barLength int, barStart int)
 		if i >= yoff+barStart && i < yoff+barStart+barLength {
 			t.pborder.CPrint(tui.ColPreviewScrollbar, t.scrollbar)
 		} else {
-			t.pborder.Print(" ")
+			t.pborder.CPrint(tui.ColPreviewScrollbar, " ")
 		}
 	}
 }
diff --git a/src/tui/tui.go b/src/tui/tui.go
index 73ed0c97..5fd27d0f 100644
--- a/src/tui/tui.go
+++ b/src/tui/tui.go
@@ -253,29 +253,31 @@ func (p ColorPair) MergeNonDefault(other ColorPair) ColorPair {
 }
 
 type ColorTheme struct {
-	Colored      bool
-	Input        ColorAttr
-	Disabled     ColorAttr
-	Fg           ColorAttr
-	Bg           ColorAttr
-	PreviewFg    ColorAttr
-	PreviewBg    ColorAttr
-	DarkBg       ColorAttr
-	Gutter       ColorAttr
-	Prompt       ColorAttr
-	Match        ColorAttr
-	Current      ColorAttr
-	CurrentMatch ColorAttr
-	Spinner      ColorAttr
-	Info         ColorAttr
-	Cursor       ColorAttr
-	Selected     ColorAttr
-	Header       ColorAttr
-	Separator    ColorAttr
-	Scrollbar    ColorAttr
-	Border       ColorAttr
-	BorderLabel  ColorAttr
-	PreviewLabel ColorAttr
+	Colored          bool
+	Input            ColorAttr
+	Disabled         ColorAttr
+	Fg               ColorAttr
+	Bg               ColorAttr
+	PreviewFg        ColorAttr
+	PreviewBg        ColorAttr
+	DarkBg           ColorAttr
+	Gutter           ColorAttr
+	Prompt           ColorAttr
+	Match            ColorAttr
+	Current          ColorAttr
+	CurrentMatch     ColorAttr
+	Spinner          ColorAttr
+	Info             ColorAttr
+	Cursor           ColorAttr
+	Selected         ColorAttr
+	Header           ColorAttr
+	Separator        ColorAttr
+	Scrollbar        ColorAttr
+	Border           ColorAttr
+	PreviewBorder    ColorAttr
+	PreviewScrollbar ColorAttr
+	BorderLabel      ColorAttr
+	PreviewLabel     ColorAttr
 }
 
 type Event struct {
@@ -508,57 +510,61 @@ var (
 
 func EmptyTheme() *ColorTheme {
 	return &ColorTheme{
-		Colored:      true,
-		Input:        ColorAttr{colUndefined, AttrUndefined},
-		Fg:           ColorAttr{colUndefined, AttrUndefined},
-		Bg:           ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:       ColorAttr{colUndefined, AttrUndefined},
-		Prompt:       ColorAttr{colUndefined, AttrUndefined},
-		Match:        ColorAttr{colUndefined, AttrUndefined},
-		Current:      ColorAttr{colUndefined, AttrUndefined},
-		CurrentMatch: ColorAttr{colUndefined, AttrUndefined},
-		Spinner:      ColorAttr{colUndefined, AttrUndefined},
-		Info:         ColorAttr{colUndefined, AttrUndefined},
-		Cursor:       ColorAttr{colUndefined, AttrUndefined},
-		Selected:     ColorAttr{colUndefined, AttrUndefined},
-		Header:       ColorAttr{colUndefined, AttrUndefined},
-		Border:       ColorAttr{colUndefined, AttrUndefined},
-		BorderLabel:  ColorAttr{colUndefined, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewLabel: ColorAttr{colUndefined, AttrUndefined},
-		Separator:    ColorAttr{colUndefined, AttrUndefined},
-		Scrollbar:    ColorAttr{colUndefined, AttrUndefined},
+		Colored:          true,
+		Input:            ColorAttr{colUndefined, AttrUndefined},
+		Fg:               ColorAttr{colUndefined, AttrUndefined},
+		Bg:               ColorAttr{colUndefined, AttrUndefined},
+		DarkBg:           ColorAttr{colUndefined, AttrUndefined},
+		Prompt:           ColorAttr{colUndefined, AttrUndefined},
+		Match:            ColorAttr{colUndefined, AttrUndefined},
+		Current:          ColorAttr{colUndefined, AttrUndefined},
+		CurrentMatch:     ColorAttr{colUndefined, AttrUndefined},
+		Spinner:          ColorAttr{colUndefined, AttrUndefined},
+		Info:             ColorAttr{colUndefined, AttrUndefined},
+		Cursor:           ColorAttr{colUndefined, AttrUndefined},
+		Selected:         ColorAttr{colUndefined, AttrUndefined},
+		Header:           ColorAttr{colUndefined, AttrUndefined},
+		Border:           ColorAttr{colUndefined, AttrUndefined},
+		BorderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 }
 
 func NoColorTheme() *ColorTheme {
 	return &ColorTheme{
-		Colored:      false,
-		Input:        ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
-		DarkBg:       ColorAttr{colDefault, AttrUndefined},
-		Prompt:       ColorAttr{colDefault, AttrUndefined},
-		Match:        ColorAttr{colDefault, Underline},
-		Current:      ColorAttr{colDefault, Reverse},
-		CurrentMatch: ColorAttr{colDefault, Reverse | Underline},
-		Spinner:      ColorAttr{colDefault, AttrUndefined},
-		Info:         ColorAttr{colDefault, AttrUndefined},
-		Cursor:       ColorAttr{colDefault, AttrUndefined},
-		Selected:     ColorAttr{colDefault, AttrUndefined},
-		Header:       ColorAttr{colDefault, AttrUndefined},
-		Border:       ColorAttr{colDefault, AttrUndefined},
-		BorderLabel:  ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colDefault, AttrUndefined},
-		PreviewBg:    ColorAttr{colDefault, AttrUndefined},
-		Gutter:       ColorAttr{colDefault, AttrUndefined},
-		PreviewLabel: ColorAttr{colDefault, AttrUndefined},
-		Separator:    ColorAttr{colDefault, AttrUndefined},
-		Scrollbar:    ColorAttr{colDefault, AttrUndefined},
+		Colored:          false,
+		Input:            ColorAttr{colDefault, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
+		DarkBg:           ColorAttr{colDefault, AttrUndefined},
+		Prompt:           ColorAttr{colDefault, AttrUndefined},
+		Match:            ColorAttr{colDefault, Underline},
+		Current:          ColorAttr{colDefault, Reverse},
+		CurrentMatch:     ColorAttr{colDefault, Reverse | Underline},
+		Spinner:          ColorAttr{colDefault, AttrUndefined},
+		Info:             ColorAttr{colDefault, AttrUndefined},
+		Cursor:           ColorAttr{colDefault, AttrUndefined},
+		Selected:         ColorAttr{colDefault, AttrUndefined},
+		Header:           ColorAttr{colDefault, AttrUndefined},
+		Border:           ColorAttr{colDefault, AttrUndefined},
+		BorderLabel:      ColorAttr{colDefault, AttrUndefined},
+		Disabled:         ColorAttr{colDefault, AttrUndefined},
+		PreviewFg:        ColorAttr{colDefault, AttrUndefined},
+		PreviewBg:        ColorAttr{colDefault, AttrUndefined},
+		Gutter:           ColorAttr{colDefault, AttrUndefined},
+		PreviewBorder:    ColorAttr{colDefault, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colDefault, AttrUndefined},
+		PreviewLabel:     ColorAttr{colDefault, AttrUndefined},
+		Separator:        ColorAttr{colDefault, AttrUndefined},
+		Scrollbar:        ColorAttr{colDefault, AttrUndefined},
 	}
 }
 
@@ -569,79 +575,85 @@ func errorExit(message string) {
 
 func init() {
 	Default16 = &ColorTheme{
-		Colored:      true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
-		DarkBg:       ColorAttr{colBlack, AttrUndefined},
-		Prompt:       ColorAttr{colBlue, AttrUndefined},
-		Match:        ColorAttr{colGreen, AttrUndefined},
-		Current:      ColorAttr{colYellow, AttrUndefined},
-		CurrentMatch: ColorAttr{colGreen, AttrUndefined},
-		Spinner:      ColorAttr{colGreen, AttrUndefined},
-		Info:         ColorAttr{colWhite, AttrUndefined},
-		Cursor:       ColorAttr{colRed, AttrUndefined},
-		Selected:     ColorAttr{colMagenta, AttrUndefined},
-		Header:       ColorAttr{colCyan, AttrUndefined},
-		Border:       ColorAttr{colBlack, AttrUndefined},
-		BorderLabel:  ColorAttr{colWhite, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewLabel: ColorAttr{colUndefined, AttrUndefined},
-		Separator:    ColorAttr{colUndefined, AttrUndefined},
-		Scrollbar:    ColorAttr{colUndefined, AttrUndefined},
+		Colored:          true,
+		Input:            ColorAttr{colDefault, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
+		DarkBg:           ColorAttr{colBlack, AttrUndefined},
+		Prompt:           ColorAttr{colBlue, AttrUndefined},
+		Match:            ColorAttr{colGreen, AttrUndefined},
+		Current:          ColorAttr{colYellow, AttrUndefined},
+		CurrentMatch:     ColorAttr{colGreen, AttrUndefined},
+		Spinner:          ColorAttr{colGreen, AttrUndefined},
+		Info:             ColorAttr{colWhite, AttrUndefined},
+		Cursor:           ColorAttr{colRed, AttrUndefined},
+		Selected:         ColorAttr{colMagenta, AttrUndefined},
+		Header:           ColorAttr{colCyan, AttrUndefined},
+		Border:           ColorAttr{colBlack, AttrUndefined},
+		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 	Dark256 = &ColorTheme{
-		Colored:      true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
-		DarkBg:       ColorAttr{236, AttrUndefined},
-		Prompt:       ColorAttr{110, AttrUndefined},
-		Match:        ColorAttr{108, AttrUndefined},
-		Current:      ColorAttr{254, AttrUndefined},
-		CurrentMatch: ColorAttr{151, AttrUndefined},
-		Spinner:      ColorAttr{148, AttrUndefined},
-		Info:         ColorAttr{144, AttrUndefined},
-		Cursor:       ColorAttr{161, AttrUndefined},
-		Selected:     ColorAttr{168, AttrUndefined},
-		Header:       ColorAttr{109, AttrUndefined},
-		Border:       ColorAttr{59, AttrUndefined},
-		BorderLabel:  ColorAttr{145, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewLabel: ColorAttr{colUndefined, AttrUndefined},
-		Separator:    ColorAttr{colUndefined, AttrUndefined},
-		Scrollbar:    ColorAttr{colUndefined, AttrUndefined},
+		Colored:          true,
+		Input:            ColorAttr{colDefault, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
+		DarkBg:           ColorAttr{236, AttrUndefined},
+		Prompt:           ColorAttr{110, AttrUndefined},
+		Match:            ColorAttr{108, AttrUndefined},
+		Current:          ColorAttr{254, AttrUndefined},
+		CurrentMatch:     ColorAttr{151, AttrUndefined},
+		Spinner:          ColorAttr{148, AttrUndefined},
+		Info:             ColorAttr{144, AttrUndefined},
+		Cursor:           ColorAttr{161, AttrUndefined},
+		Selected:         ColorAttr{168, AttrUndefined},
+		Header:           ColorAttr{109, AttrUndefined},
+		Border:           ColorAttr{59, AttrUndefined},
+		BorderLabel:      ColorAttr{145, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 	Light256 = &ColorTheme{
-		Colored:      true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
-		DarkBg:       ColorAttr{251, AttrUndefined},
-		Prompt:       ColorAttr{25, AttrUndefined},
-		Match:        ColorAttr{66, AttrUndefined},
-		Current:      ColorAttr{237, AttrUndefined},
-		CurrentMatch: ColorAttr{23, AttrUndefined},
-		Spinner:      ColorAttr{65, AttrUndefined},
-		Info:         ColorAttr{101, AttrUndefined},
-		Cursor:       ColorAttr{161, AttrUndefined},
-		Selected:     ColorAttr{168, AttrUndefined},
-		Header:       ColorAttr{31, AttrUndefined},
-		Border:       ColorAttr{145, AttrUndefined},
-		BorderLabel:  ColorAttr{59, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewLabel: ColorAttr{colUndefined, AttrUndefined},
-		Separator:    ColorAttr{colUndefined, AttrUndefined},
-		Scrollbar:    ColorAttr{colUndefined, AttrUndefined},
+		Colored:          true,
+		Input:            ColorAttr{colDefault, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
+		DarkBg:           ColorAttr{251, AttrUndefined},
+		Prompt:           ColorAttr{25, AttrUndefined},
+		Match:            ColorAttr{66, AttrUndefined},
+		Current:          ColorAttr{237, AttrUndefined},
+		CurrentMatch:     ColorAttr{23, AttrUndefined},
+		Spinner:          ColorAttr{65, AttrUndefined},
+		Info:             ColorAttr{101, AttrUndefined},
+		Cursor:           ColorAttr{161, AttrUndefined},
+		Selected:         ColorAttr{168, AttrUndefined},
+		Header:           ColorAttr{31, AttrUndefined},
+		Border:           ColorAttr{145, AttrUndefined},
+		BorderLabel:      ColorAttr{59, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 }
 
@@ -682,8 +694,10 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 	theme.PreviewFg = o(theme.Fg, theme.PreviewFg)
 	theme.PreviewBg = o(theme.Bg, theme.PreviewBg)
 	theme.PreviewLabel = o(theme.BorderLabel, theme.PreviewLabel)
+	theme.PreviewBorder = o(theme.Border, theme.PreviewBorder)
 	theme.Separator = o(theme.Border, theme.Separator)
 	theme.Scrollbar = o(theme.Border, theme.Scrollbar)
+	theme.PreviewScrollbar = o(theme.PreviewBorder, theme.PreviewScrollbar)
 
 	initPalette(theme)
 }
@@ -721,6 +735,6 @@ func initPalette(theme *ColorTheme) {
 	ColBorderLabel = pair(theme.BorderLabel, theme.Bg)
 	ColPreviewLabel = pair(theme.PreviewLabel, theme.PreviewBg)
 	ColPreview = pair(theme.PreviewFg, theme.PreviewBg)
-	ColPreviewBorder = pair(theme.Border, theme.PreviewBg)
-	ColPreviewScrollbar = pair(theme.Scrollbar, theme.PreviewBg)
+	ColPreviewBorder = pair(theme.PreviewBorder, theme.PreviewBg)
+	ColPreviewScrollbar = pair(theme.PreviewScrollbar, theme.PreviewBg)
 }