Examine source code of wave clouds

{
  "theme": {
    "images": {
      "theme_frame": "waveclouds.jpg"
    },
    "colors": {
      "frame": "#f2eded",
      "tab_background_text": "#f7f2f2"
    }
  },
  "version": "2.0",
  "name": "wave clouds",
  "manifest_version": 2,
  "description": "clouds shaped like waves"
}