Examine source code of test

{
  "name": "test",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "purple.png"
    },
    "colors": {
      "frame": "rgba(112, 11, 194, 1)",
      "tab_background_text": "rgba(208, 170, 230, 1)",
      "toolbar": "rgba(153, 56, 222, 1)",
      "bookmark_text": "rgba(208, 170, 230, 1)",
      "toolbar_field": "rgba(112, 11, 194, 1)",
      "toolbar_field_text": "rgba(208, 170, 230, 1)",
      "tab_line": "rgba(150, 86, 214, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6e913001-8bba-4b84-b800-d716a3e2f32d}"
    }
  }
}