Examine source code of Deep Purple Material

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Deep Purple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(12, 4, 25)",
      "toolbar_text": "rgb(242, 234, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(229, 213, 255)",
      "toolbar_field": "rgb(25, 9, 51)",
      "toolbar_field_text": "rgb(242, 234, 255)",
      "tab_line": "rgb(127, 49, 255)",
      "popup": "rgb(12, 4, 25)",
      "popup_text": "rgb(242, 234, 255)",
      "tab_loading": "rgb(127, 49, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f84e7946-8fcd-44d4-b66e-b4a54969d8db}"
    }
  }
}