Examine source code of Tulip Sky

{
  "theme": {
    "images": {
      "theme_frame": "Tulips-Sky-Header.jpg"
    },
    "colors": {
      "frame": "#30450e",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Tulip Sky",
  "manifest_version": 2,
  "description": "Beautiful spring tulips and lovely blue sky. (colorful flowers fresh blossoms border pretty field leaves foliage yellow red pink white green photograph widescreen wide screen clouds sunny sun summer ) Thanks to Vera Kratochvil of <a href=\"https://outgoing.prod.mozaws.net/v1/a97a4a6cbbbb23cd406e5e59fcf2706d71eaacb99dfabb61179286528ba814a9/http%3A//PublicDomainPictures.net\" rel=\"nofollow\">PublicDomainPictures.net</a> for the great photo."
}