Examine source code of Vista Colors

{
  "theme": {
    "images": {
      "theme_frame": "1.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "Vista Colors",
  "manifest_version": 2,
  "description": "Vista Colors is a persona based on the popular vista wallpaper. In this particular case I downloaded it from a site for Vista Wallpapers. \n\nIt's my first design, hope you like it:) "
}