Examine source code of city feet

{
  "theme": {
    "images": {
      "theme_frame": "feet.jpg"
    },
    "colors": {
      "frame": "#470101",
      "tab_background_text": "#4f0404"
    }
  },
  "version": "2.0",
  "name": "city feet",
  "manifest_version": 2,
  "description": "Stencil work"
}