Examine source code of Freshly-Cut Grass

{
  "theme": {
    "images": {
      "theme_frame": "grassy.jpg"
    },
    "colors": {
      "frame": "#91e6b3",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Freshly-Cut Grass",
  "manifest_version": 2,
  "description": "Relax as you take in the beautiful Freshly-Cut Grass. You could almost imagine you were sitting amongst it right now!"
}