Examine source code of Doc Fox Martens

{
  "theme": {
    "images": {
      "theme_frame": "doc-fox-m-head.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Doc Fox Martens",
  "manifest_version": 2,
  "description": "My tribute to a famous brand of shoes and boots. My pairs are pictured here."
}