Examine source code of My Viola

{
  "theme": {
    "images": {
      "theme_frame": "hull-personas.jpg"
    },
    "colors": {
      "frame": "#00fca0",
      "tab_background_text": "#020da6"
    }
  },
  "version": "2.0",
  "name": "My Viola",
  "manifest_version": 2,
  "description": "My own Robert Hull viola"
}