Examine source code of Processing 1.1

{
  "theme": {
    "images": {
      "theme_frame": "processing.jpg"
    },
    "colors": {
      "frame": "#f5f2f2",
      "tab_background_text": "#f2eded"
    }
  },
  "version": "2.0",
  "name": "Processing 1.1",
  "manifest_version": 2,
  "description": "For the <a href=\"https://outgoing.prod.mozaws.net/v1/d15b61ecf9b2c9c7c9f83a1c98ed5f1fcbd9fd2b4396609639bc129b9a8bba02/http%3A//Processing.org\" rel=\"nofollow\">Processing.org</a> fans. Hastily put together. I just had to have one."
}