Examine source code of Colorful Animals

{
  "theme": {
    "images": {
      "theme_frame": "colorful.jpg"
    },
    "colors": {
      "frame": "#eaff00",
      "tab_background_text": "#ff0091"
    }
  },
  "version": "2.0",
  "name": "Colorful Animals",
  "manifest_version": 2,
  "description": "Animal skins with colorful lines..."
}