Examine source code of Wallpaper Stars

{
  "name": "Wallpaper Stars",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Wallpaper Stars.jpg"
    },
    "colors": {
      "frame": "rgba(197, 100, 217, 1)",
      "tab_background_text": "rgba(195, 115, 209, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(240, 218, 250, 1)",
      "toolbar_field_text": "rgba(195, 115, 209, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c42459ee-57ed-4788-b7ec-e1764cb49118}"
    }
  }
}