Examine source code of Old Baseball

{
  "theme": {
    "images": {
      "theme_frame": "hd_baseballfinal.jpg"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#e3e3e3"
    }
  },
  "version": "2.0",
  "name": "Old Baseball",
  "manifest_version": 2,
  "description": "I found this old baseball in my backyard and decided to have some fun with it... I absolutely love the textures and detail on the ball. For more information on my design please visit <a href=\"https://outgoing.prod.mozaws.net/v1/4d9bf5c74e31e995574d9b11773a6fca9be7cdc879aa7bf29cb5ce1554b0026d/http%3A//www.mdostudio.com\" rel=\"nofollow\">http://www.mdostudio.com</a>"
}