Examine source code of punk

{
  "name": "punk",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "feu.jpeg"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 1)",
      "tab_background_text": "rgba(251, 0, 255, 1)",
      "toolbar": "rgba(255, 221, 0, 1)",
      "bookmark_text": "rgba(40, 184, 0, 1)",
      "toolbar_field": "rgba(255, 0, 0, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b6c7bdbf-604f-4dc6-ae8a-c5b550299633}"
    }
  }
}