Examine source code of havoline

{
  "theme": {
    "images": {
      "theme_frame": "up.jpg"
    },
    "colors": {
      "frame": "#ff8c00",
      "tab_background_text": "#ff6a00"
    }
  },
  "version": "2.0",
  "name": "havoline",
  "manifest_version": 2,
  "description": "havoline"
}