Examine source code of Bassguitar

{
  "theme": {
    "images": {
      "theme_frame": "Bassguitar_header.jpg"
    },
    "colors": {
      "frame": "#9e9999",
      "tab_background_text": "#452727"
    }
  },
  "version": "2.0",
  "name": "Bassguitar",
  "manifest_version": 2,
  "description": "This is my bass guitar,\nCrafter cruiser, imitation jazz bass.\nFor all you basslovers out there :)"
}