Examine source code of Piano Key

{
  "theme": {
    "images": {
      "theme_frame": "pianokeybannertop.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#adadad"
    }
  },
  "version": "2.0",
  "name": "Piano Key",
  "manifest_version": 2,
  "description": "I didnt like the other designs, so I made my own. Enjoy!\n\nTags: piano, keyboard, key, music, yada yada yada"
}