Examine source code of Purple Giraffe

{
  "name": "Purple Giraffe",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Metall Giraffe654.jpg"
    },
    "colors": {
      "frame": "rgba(52, 17, 69, 1)",
      "tab_background_text": "rgba(198, 211, 242, 1)",
      "toolbar": "rgba(84, 24, 42, 0.41)",
      "bookmark_text": "rgba(230, 184, 202, 1)",
      "toolbar_field": "rgba(5, 10, 48, 0.98)",
      "toolbar_field_text": "rgba(188, 178, 232, 1)"
    }
  }
}