fix: Taxi theme accent color now distinct from text

Accent was #0e0e00 (same as --fg), making buttons and interactive
elements invisible. Changed to #7a4a00/#5c3800 dark amber.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

status/css/themes.css

@@ -290,8 +290,8 @@
   --error: #c62828;
   --warning: #e65100;
 
-  --accent: #0e0e00;
-  --accent-strong: #1a1a05;
+  --accent: #7a4a00;
+  --accent-strong: #5c3800;
 }
 
 /* ===== Ocean ===== */