Examine source code of Vintage Mustang

{
  "theme": {
    "images": {
      "theme_frame": "65Mustangtop.JPG"
    },
    "colors": {
      "frame": "#948f8f",
      "tab_background_text": "#948f8f"
    }
  },
  "version": "2.0",
  "name": "Vintage Mustang",
  "manifest_version": 2,
  "description": "My 1965 Mustang"
}