Examine source code of RollsRoyce

{
  "name": "RollsRoyce",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Webp.net-resizeimage(2).jpg"
    },
    "colors": {
      "frame": "rgba(193, 195, 199, 1)",
      "tab_background_text": "rgba(15, 15, 15, 1)",
      "toolbar": "rgba(194, 39, 39, 1)",
      "toolbar_field": "rgba(194, 190, 190, 1)"
    }
  }
}