Examine source code of Professional Purple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(104, 33, 122)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(28, 27, 34)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(28, 27, 34)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 176, 25)",
      "popup": "rgb(28, 27, 34)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(255, 176, 25)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(250, 171, 20)",
      "ntp_background": "rgb(28, 27, 34)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(104, 33, 122)",
      "sidebar": "rgb(28, 27, 34)",
      "tab_background_separator": "rgb(255, 176, 25)",
      "tab_loading": "rgb(255, 176, 25)",
      "toolbar_field_border_focus": "rgba(255, 176, 25, 0.66)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{13aaa198-7079-4e47-9ab9-990f142482d2}"
    }
  }
}