Examine source code of Preppy Squares -- l&t

{
  "theme": {
    "images": {
      "theme_frame": "7.png"
    },
    "colors": {
      "frame": "#8dd4f0",
      "tab_background_text": "#83683b"
    }
  },
  "version": "2.0",
  "name": "Preppy Squares -- l&t",
  "manifest_version": 2,
  "description": "Hot pink, light blue, light green, beige and brown squares."
}