Examine source code of Red Thunder

{
  "theme": {
    "images": {
      "theme_frame": "sunsettop.jpg"
    },
    "colors": {
      "frame": "#ebc49b",
      "tab_background_text": "#93a8b5"
    }
  },
  "version": "2.0",
  "name": "Red Thunder",
  "manifest_version": 2,
  "description": "Arizona Summer sunset - taken summer 2009 in Tucson, AZ."
}