Examine source code of Soapbox Derby

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#40d640",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Soapbox Derby",
  "manifest_version": 2,
  "description": "A simple design permitting all browse functions and \n\"keeping the dream alive\""
}