Examine source code of Checkered Sparkles

{
  "name": "Confetti",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "scenecore rainbow.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(99, 200, 255, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(255, 244, 140, 1)",
      "toolbar_field_text": "rgba(242, 147, 31, 1)",
      "tab_line": "rgba(255, 163, 135, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6b37327-9286-4360-9326-0ba3c5df9661}"
    }
  }
}