Examine source code of Purple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(68, 6, 130)",
      "toolbar_text": "rgb(209, 165, 254)",
      "frame": "rgb(32, 6, 68)",
      "tab_background_text": "rgb(100, 23, 211)",
      "toolbar_field": "rgb(39, 7, 84)",
      "toolbar_field_text": "rgb(209, 165, 254)",
      "tab_line": "rgb(151, 53, 196)",
      "popup": "rgb(39, 7, 84)",
      "popup_text": "rgb(209, 165, 254)",
      "tab_loading": "rgb(151, 53, 196)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aba70af7-7ec4-4aa4-b98a-f2ce92025601}"
    }
  }
}