Examine source code of Mulberry St.

{
  "theme": {
    "images": {
      "theme_frame": "header1.jpg"
    },
    "colors": {
      "frame": "#0d0c0c",
      "tab_background_text": "#f7fafa"
    }
  },
  "version": "2.0",
  "name": "Mulberry St.",
  "manifest_version": 2,
  "description": "19th c. New York"
}