Examine source code of Happy Summer Time

{
  "theme": {
    "images": {
      "theme_frame": "GlossyStripes.png"
    },
    "colors": {
      "frame": "#d9d9d9",
      "tab_background_text": "#58e74f"
    }
  },
  "version": "2.0",
  "name": "Happy Summer Time",
  "manifest_version": 2,
  "description": "Having a heat wave in Glasgow ,I decided to make a summery bright persona ........ all that's missing is the ice cream :) .Enjoy!"
}