Examine source code of GoofyTheme

{
  "name": "GoofyTheme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "doggo-spin.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 213, 0, 0.74)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(0, 247, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(255, 213, 0, 1)",
      "tab_line": "rgba(255, 213, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9aa7f60-b86b-402c-9961-2be972b3dc85}"
    }
  }
}