Examine source code of Holo Dark Theme

{
  "name": "Holo Dark Theme",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "rsz_kindpng_2338399V2.jpg"
    },
    "colors": {
      "frame": "rgba(24, 24, 24, 1)",
      "tab_background_text": "rgba(213, 213, 213, 1)",
      "toolbar": "rgba(69, 69, 69, 0.5)",
      "bookmark_text": "rgba(213, 213, 213, 1)",
      "toolbar_field": "rgba(96, 96, 96, 0.9)",
      "toolbar_field_text": "rgba(213, 213, 213, 1)",
      "tab_line": "rgba(155, 156, 156, 0.6)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{16b63e7f-60a7-44c3-ade4-63af401b9158}"
    }
  }
}