fix: theme not being set with multiple values (#1049)

* fix: theme not being set with multiple values

* test(theme): add better theme override tests

---------

Co-authored-by: LoricAndre <57358788+LoricAndre@users.noreply.github.com>

Author: leaty

src/theme.rs

@@ -355,7 +355,7 @@ impl ColorTheme {
             if let Some((name, spec)) = pair.split_once(':') {
                 theme.set_color(name, spec);
             } else {
-                theme = match color {
+                theme = match pair {
                     "molokai" => ColorTheme::molokai256(),
                     "light" => ColorTheme::light256(),
                     "16" => ColorTheme::default16(),
@@ -568,14 +568,26 @@ mod tests {
     }
 
     #[test]
-    fn test_base_theme_with_overrides() {
-        // Test that base theme can be overridden
-        let theme = ColorTheme::from_options("dark,matched:200");
+    fn test_default_theme_with_overrides() {
+        // Test overriding default theme
+        let theme = ColorTheme::from_options("default,matched:200");
         assert_eq!(theme.matched.fg, Some(Color::Indexed(200)));
-        // Other colors should still be from dark theme
+        // Other colors should still be from default theme
         assert!(theme.prompt.fg.is_some());
     }
 
+    #[test]
+    fn test_theme_with_overrides() {
+        // Test overriding theme
+        for opts in &["16,prompt:200", "prompt:150,16,prompt:200"] {
+            let theme = ColorTheme::from_options(opts);
+            assert_eq!(theme.prompt.fg, Some(Color::Indexed(200)));
+            // Other colors should still be from given theme
+            assert_eq!(theme.matched.fg, Some(Color::Green));
+            assert_eq!(theme.matched.bg, None);
+        }
+    }
+
     #[test]
     fn test_all_component_names() {
         // Test all valid component names with their specific colors