Examine source code of shoe on grass

{
  "theme": {
    "images": {
      "theme_frame": "shoe.header.png"
    },
    "colors": {
      "frame": "#edf0e2",
      "tab_background_text": "#dee3dc"
    }
  },
  "version": "2.0",
  "name": "shoe on grass",
  "manifest_version": 2,
  "description": "shoe, grass, shoes"
}