Examine source code of Burgundy Simple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Burgundy Simple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(243, 236, 224)",
      "toolbar_text": "rgba(1, 8, 12, 0.97)",
      "frame": "rgb(115, 15, 75)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(4, 11, 15, 0.95)",
      "popup": "rgb(243, 236, 224)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgba(4, 11, 15, 0.95)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73d78788-0ec3-4644-8b74-4ff331898279}"
    }
  }
}