Examine source code of UiTheme

{
  "name": "UiTheme",
  "manifest_version": 2,
  "version": "6.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 0.4)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(43, 38, 38, 0.3)",
      "bookmark_text": "rgba(209, 173, 111, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(46, 46, 46, 1)"
    }
  }
}