Examine source code of Autumn Treetops 2

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#4d1d1d",
      "tab_background_text": "#c4f590"
    }
  },
  "version": "2.0",
  "name": "Autumn Treetops 2",
  "manifest_version": 2,
  "description": "Treetop views of autumn leaves"
}