Examine source code of Musical Notes

{
  "theme": {
    "images": {
      "theme_frame": "musicnotesheader2.jpg"
    },
    "colors": {
      "frame": "#e6dfdf",
      "tab_background_text": "#020630"
    }
  },
  "version": "2.0",
  "name": "Musical Notes",
  "manifest_version": 2,
  "description": "Simple Music Notes on white Background :)"
}