Examine source code of NightDrops

{
  "theme": {
    "images": {
      "theme_frame": "1226626457824.jpg"
    },
    "colors": {
      "frame": "#dddce3",
      "tab_background_text": "#dddce3"
    }
  },
  "version": "2.0",
  "name": "NightDrops",
  "manifest_version": 2,
  "description": "This is my first try"
}