Examine source code of Desert

{
  "name": "Desert",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot (8).png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(204, 140, 29, 1)",
      "toolbar": "rgba(140, 90, 20, 1)",
      "bookmark_text": "rgba(93, 176, 240, 1)",
      "toolbar_field": "rgba(184, 125, 7, 1)",
      "toolbar_field_text": "rgba(110, 74, 11, 1)",
      "tab_line": "rgba(87, 70, 37, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{918f1eda-e3cb-4366-aef5-9de90be011fe}"
    }
  }
}