Examine source code of pastel pattern

{
  "theme": {
    "images": {
      "theme_frame": "FRONT85A.JPG"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "pastel pattern",
  "manifest_version": 2,
  "description": "pattern from <a href=\"https://outgoing.prod.mozaws.net/v1/b83e6b62e4698a11a06d7b218688e4a5dfebcdb4c883fe4390b33b7034796427/http%3A//www.spoonflower.com/\" rel=\"nofollow\">http://www.spoonflower.com/</a>"
}