Examine source code of Drum kit

{
  "theme": {
    "images": {
      "theme_frame": "header2.jpg"
    },
    "colors": {
      "frame": "#eb0707",
      "tab_background_text": "#ff8103"
    }
  },
  "version": "2.0",
  "name": "Drum kit",
  "manifest_version": 2
}