Examine source code of Spring Blossoms

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#fae6f1",
      "tab_background_text": "#5c0138"
    }
  },
  "version": "2.0",
  "name": "Spring Blossoms",
  "manifest_version": 2,
  "description": "Stock credit: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/b4529a7f4a350c504697165ca7b6d4314efd0192f45f878ca8757a819fed1c63/http%3A//www.pngall.com/\">pngall</a>"
}