Examine source code of Blue Music Notes

{
  "theme": {
    "images": {
      "theme_frame": "BlueMusicNotes2.jpg"
    },
    "colors": {
      "frame": "#e1e2f2",
      "tab_background_text": "#0a0b0d"
    }
  },
  "version": "2.0",
  "name": "Blue Music Notes",
  "manifest_version": 2
}