Examine source code of Green Gradient - Mac

{
  "theme": {
    "images": {
      "theme_frame": "Top.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Green Gradient - Mac",
  "manifest_version": 2,
  "description": "Green gradients. Originally created using tutorial:\n<a href=\"https://outgoing.prod.mozaws.net/v1/4d1414fa6d5e626f4fb46dffd69c8703f70fe5eb45b5f396e0cd875a9bfe2782/http%3A//psd.tutsplus.com/tutorials/tutorials-effects/creating-a-mac-type-background-in-photoshop/\" rel=\"nofollow\">http://psd.tutsplus.com/tutorials/tutorials-effects/creating-a-mac-type-background-in-photoshop/</a>"
}