Examine source code of Todd Rundgren's Utopia

{
  "name": "Utopia",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Utopia.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(209, 54, 217, 1)",
      "toolbar": "rgba(37, 69, 230, 1)",
      "bookmark_text": "rgba(179, 173, 53, 1)",
      "toolbar_field": "rgba(235, 170, 191, 1)",
      "toolbar_field_text": "rgba(55, 58, 232, 1)",
      "tab_line": "rgba(240, 125, 125, 1)"
    }
  }
}