Examine source code of Moomins

{
  "theme": {
    "images": {
      "theme_frame": "moominhead.jpg"
    },
    "colors": {
      "frame": "#8715d9",
      "tab_background_text": "#eb85f2"
    }
  },
  "version": "2.0",
  "name": "Moomins",
  "manifest_version": 2,
  "description": "moomins persona since there were none around"
}