Examine source code of gecko_design_bali

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.jpg"
    },
    "colors": {
      "frame": "#d4d4d4",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "gecko_design_bali",
  "manifest_version": 2
}