Examine source code of Crystal Good

{
  "name": "Brock (Pokémon)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Brock.png"
    },
    "colors": {
      "frame": "rgba(0, 49, 163, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(179, 179, 179, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{872e7a56-7c22-4209-bc34-753f79d69f22}"
    }
  }
}