Examine source code of Azolla

{
  "theme": {
    "images": {
      "theme_frame": "azolla-h.jpg"
    },
    "colors": {
      "frame": "#f50a0a",
      "tab_background_text": "#f2c80c"
    }
  },
  "version": "2.0",
  "name": "Azolla",
  "manifest_version": 2,
  "description": "Azolla, a floating water fern (known also as mosquito fern, duckweed fern, fairy moss)"
}