Examine source code of big-win

{
  "name": "big-win",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "th-3765709748.jpg"
    },
    "colors": {
      "frame": "rgba(56, 194, 41, 1)",
      "tab_background_text": "rgba(37, 69, 102, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(143, 10, 50, 1)",
      "toolbar_field": "rgba(29, 156, 22, 1)",
      "toolbar_field_text": "rgba(166, 48, 48, 1)",
      "tab_line": "rgba(45, 130, 21, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9178e69-0819-4291-a710-369f6caf1314}"
    }
  }
}