Examine source code of Yankel2b

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#997171"
    }
  },
  "version": "2.0",
  "name": "Yankel2b",
  "manifest_version": 2,
  "description": "Rabbi Israel Dov Odesser, the Baal Hapetek.\nNa Nach Nachma Nachman MeUman"
}