Examine source code of Dangerous Clouds

{
  "theme": {
    "images": {
      "theme_frame": "935d.jpg"
    },
    "colors": {
      "frame": "#400303",
      "tab_background_text": "#d61500"
    }
  },
  "version": "2.0",
  "name": "Dangerous Clouds",
  "manifest_version": 2,
  "description": "When the sky looks like this, you know something crazy is going down."
}