Examine source code of Sunshine Happyness

{
  "theme": {
    "images": {
      "theme_frame": "top.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#292929"
    }
  },
  "version": "2.0",
  "name": "Sunshine Happyness",
  "manifest_version": 2,
  "description": "A calm, good feeling browser. It's not possible to feel stressed while lookin at this. \nSO CHILL OUT!\n[[x]]"
}