Examine source code of Alien Crown

{
  "theme": {
    "images": {
      "theme_frame": "AlienCrownHeaderbySaskya.jpg"
    },
    "colors": {
      "frame": "#93d8db",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Alien Crown",
  "manifest_version": 2,
  "description": "What IS this thing? Hm, oh well... Even if it did come from the head of some ancient alien race we've never heard of before -- it sure is pretty."
}