Examine source code of giraf

{
  "name": "giraf",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "5fc535a3f325c320bffeab29001011bb.jpg"
    },
    "colors": {
      "toolbar": "rgba(222, 17, 17, 1)",
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(224, 0, 0, 1)",
      "bookmark_text": "rgba(171, 53, 53, 1)"
    }
  }
}