Examine source code of Christmas Cocoa V.2

{
  "name": "Christmas Cocoa V.2",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Christmas Cocoa V.2.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(212, 32, 26, 1)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0.74)",
      "toolbar_field_text": "rgba(87, 130, 85, 1)",
      "tab_line": "rgba(148, 75, 19, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b517938-730a-436a-b221-7286442b1781}"
    }
  }
}