Add color theme config

* add option `theme` that allows for setting of a theme,
the default is `default`

* under `themes` the themes can be described as follows:

either:
```
themes:
  default:
    fg: [0,0,0]
    bg: [0,0,0]
    black: [0,0,0]
    red: [0,0,0]
    green: [0,0,0]
    yellow: [0,0,0]
    blue: [0,0,0]
    magenta: [0,0,0]
    cyan: [0,0,0]
    white: [0,0,0]
    orange: [0,0,0]
```
or
```
themes:
  default:
    fg: 0
    bg: 0
    black: 0
    red: 0
    green: 0
    yellow: 0
    blue: 0
    magenta: 0
    cyan: 0
    white: 0
    orange: 0
```

If the key is different from default, it needs to either be specified on
start with `options --theme [THEME]`, or in the configuration file under
theme: [THEME].

closes #390

1 files changed, 8 insertions, 3 deletions

diff --git a/zellij-client/src/lib.rs b/zellij-client/src/lib.rs
index 3817e7908..7ea4f81ee 100644
--- a/zellij-client/src/lib.rs
+++ b/zellij-client/src/lib.rs
@@ -91,7 +91,14 @@ pub fn start_client(
     let take_snapshot = "\u{1b}[?1049h";
     let bracketed_paste = "\u{1b}[?2004h";
     os_input.unset_raw_mode(0);
-    let palette = os_input.load_palette();
+    let config_options = Options::from_cli(&config.options, opts.command.clone());
+    let palette = config.themes.clone().map_or_else(
+        || os_input.load_palette(),
+        |t| {
+            t.theme_config(&config_options)
+                .unwrap_or_else(|| os_input.load_palette())
+        },
+    );
     let _ = os_input
         .get_stdout_writer()
         .write(take_snapshot.as_bytes())
@@ -102,8 +109,6 @@ pub fn start_client(
         .unwrap();
     std::env::set_var(&"ZELLIJ", "0");
 
-    let config_options = Options::from_cli(&config.options, opts.command.clone());
-
     let full_screen_ws = os_input.get_terminal_size_using_fd(0);
     let client_attributes = ClientAttributes {
         position_and_size: full_screen_ws,