Examine source code of Cool Forest Floor

{
  "theme": {
    "images": {
      "theme_frame": "CoolForestHeader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Cool Forest Floor",
  "manifest_version": 2,
  "description": "From a photo I took while on a walk..."
}