Examine source code of old Hi Fi

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0a1224",
      "tab_background_text": "#f5c990"
    }
  },
  "version": "2.0",
  "name": "old Hi Fi",
  "manifest_version": 2,
  "description": "audio player - well used. The stories it could tell..."
}