Examine source code of Linked-theme

{
  "name": "Linked",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "HEADERDONE.png"
    },
    "colors": {
      "frame": "rgba(255, 200, 0, 1)",
      "tab_background_text": "rgba(36, 36, 36, 1)",
      "toolbar": "rgba(36, 36, 36, 1)",
      "bookmark_text": "rgba(255, 200, 0, 1)",
      "toolbar_field": "rgba(255, 200, 0, 1)",
      "toolbar_field_text": "rgba(36, 36, 36, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d15b694-1b78-4d37-b330-f757d4cd4697}"
    }
  }
}