Examine source code of My Easter Bunnies

{
  "theme": {
    "images": {
      "theme_frame": "BunniesHeader.jpg"
    },
    "colors": {
      "frame": "#c0f27e",
      "tab_background_text": "#e30c0c"
    }
  },
  "version": "2.0",
  "name": "My Easter Bunnies",
  "manifest_version": 2,
  "description": "Bunnies are waiting for Easter."
}