Examine source code of Windowstheme

{
  "name": "Windowstheme",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "THEMEWINDOWS.png"
    },
    "colors": {
      "toolbar": "rgba(224, 22, 22, 1)",
      "toolbar_field": "rgba(11, 212, 11, 1)",
      "toolbar_field_text": "rgba(212, 45, 45, 1)",
      "frame": "rgba(15, 73, 196, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(224, 40, 40, 1)"
    }
  }
}