Examine source code of Dark blue Clouds Theme

{
  "name": "Dark blue Clouds Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "moreblueclouds.jpg"
    },
    "colors": {
      "frame": "rgba(16, 39, 94, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(30, 27, 59, 1)",
      "bookmark_text": "rgba(99, 128, 230, 1)",
      "toolbar_field_text": "rgba(137, 141, 217, 1)",
      "tab_line": "rgba(134, 128, 207, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{309291f4-2193-4e63-8df9-2f5373e1f611}"
    }
  }
}