Examine source code of sleep dreams

{
  "theme": {
    "images": {
      "theme_frame": "hase1.jpg"
    },
    "colors": {
      "frame": "#f6f7cd",
      "tab_background_text": "#b1f5f0"
    }
  },
  "version": "2.0",
  "name": "sleep dreams",
  "manifest_version": 2,
  "description": "the little rabbit is sleeping,"
}