Examine source code of happy feet

{
  "theme": {
    "images": {
      "theme_frame": "HappyFeetheader.jpg"
    },
    "colors": {
      "frame": "#ebdf61",
      "tab_background_text": "#120fab"
    }
  },
  "version": "2.0",
  "name": "happy feet",
  "manifest_version": 2
}