Examine source code of carnival

{
  "theme": {
    "images": {
      "theme_frame": "IMG_0630-carnival-2.jpg"
    },
    "colors": {
      "frame": "#f76f54",
      "tab_background_text": "#f2f760"
    }
  },
  "version": "2.0",
  "name": "carnival",
  "manifest_version": 2,
  "description": "carnival"
}