Examine source code of SportTracks

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#ac9fbd",
      "tab_background_text": "#0a1436"
    }
  },
  "version": "2.0",
  "name": "SportTracks",
  "manifest_version": 2,
  "description": "As a fun from SportTracks, I have build this theme, as a support for this free tool that helps athletes in tracking, sharing and monitoring their activities. I do it for my Mountain Bike Activities here in Israel."
}