Examine source code of T3K

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#29292c",
      "tab_background_text": "#e5e5e5"
    }
  },
  "version": "2.0",
  "name": "T3K",
  "manifest_version": 2,
  "description": "A simple persona to go with the T3K GTK2 Theme. Uses colors taken from the theme's GTKRC and should force white UI icons in Firefox. Credit for T3K goes to <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/9128230c5558aa71ac21c7191aefaee68fed4419e5b58510afef9844de5ffa69/http%3A//amadme.deviantart.com/art/T3K-103862094\">aMADme @ deviantART</a>"
}