Examine source code of vista dark 2

{
  "theme": {
    "images": {
      "theme_frame": "mandolux-liriope-l-1600.jpg"
    },
    "colors": {
      "frame": "#de1616",
      "tab_background_text": "#080000"
    }
  },
  "version": "2.0",
  "name": "vista dark 2",
  "manifest_version": 2,
  "description": "vista dark "
}