Examine source code of Baker Street -- 221b

{
  "theme": {
    "images": {
      "theme_frame": "SH_head.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Baker Street -- 221b",
  "manifest_version": 2,
  "description": "This Sherlock Holmes-inspired Persona was made using:\n\npistol (Webley), public domain\n\npocket watch, Creative Commons attribution license, by Theresa Thompson\n\nmagnifying glass, creative commons attribution-noncommercial-share alice license, by Catherine  Nomura\n\npen, creative commons attribution-noncommercial license, by JillinMD\n\npaper texture, creative commons attribution license, by Suzanne  Clute"
}