Examine source code of night and day

{
  "theme": {
    "images": {
      "theme_frame": "keeper-1.jpg"
    },
    "colors": {
      "frame": "#368ae3",
      "tab_background_text": "#54128a"
    }
  },
  "version": "2.0",
  "name": "night and day",
  "manifest_version": 2,
  "description": "tattoo style girl with sun and moon"
}