Examine source code of 33win

{
  "name": "theme inspired by cosmic colors",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "43936b040e91062af94e93afef9a9077.jpg"
    },
    "colors": {
      "frame": "rgba(198, 158, 222, 1)",
      "tab_background_text": "rgba(199, 141, 224, 1)",
      "bookmark_text": "rgba(94, 17, 122, 1)",
      "toolbar_field_text": "rgba(199, 141, 224, 1)",
      "tab_line": "rgba(94, 17, 122, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{03dc4258-7687-4e62-899e-94cdd72a2871}"
    }
  }
}