Examine source code of grass&sky

{
  "theme": {
    "images": {
      "theme_frame": "001.jpg"
    },
    "colors": {
      "frame": "#00ff26",
      "tab_background_text": "#00c8ff"
    }
  },
  "version": "2.0",
  "name": "grass&sky",
  "manifest_version": 2
}