Examine source code of Easter Bunny

{
  "theme": {
    "images": {
      "theme_frame": "easterbunny.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#1d022b"
    }
  },
  "version": "2.0",
  "name": "Easter Bunny",
  "manifest_version": 2,
  "description": "Two cute rabbits with pastel easter eggs.\n\nA happy easter to everybunny!"
}