Examine source code of Pink Floyd Retro

{
  "name": "Pink Floyd Retro",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "pinkfly-dark-side-moon-japanese-original-lp2.jpg"
    },
    "colors": {
      "frame": "rgba(27, 0, 71, 1)",
      "tab_background_text": "rgba(217, 217, 217, 1)",
      "toolbar": "rgba(245, 245, 245, 0)",
      "bookmark_text": "rgba(217, 217, 217, 1)",
      "toolbar_field": "rgba(2, 0, 3, 0)",
      "toolbar_field_text": "rgba(207, 205, 209, 1)"
    }
  }
}