Examine source code of Purple & Green (#1)

{
  "name": "Purple & Green (#1)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "IMG_2635.jpg"
    },
    "colors": {
      "frame": "rgba(56, 99, 201, 1)",
      "tab_background_text": "rgba(158, 104, 104, 1)",
      "toolbar": "rgba(66, 46, 46, 1)",
      "bookmark_text": "rgba(245, 182, 182, 1)",
      "toolbar_field": "rgba(245, 226, 226, 1)",
      "toolbar_field_text": "rgba(43, 34, 34, 1)",
      "tab_line": "rgba(232, 153, 153, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{70d28276-a56b-42db-813b-27557c31d414}"
    }
  }
}