Examine source code of Perfect World - Hishou

{
  "theme": {
    "images": {
      "theme_frame": "header2.jpg"
    },
    "colors": {
      "frame": "#827f7f",
      "tab_background_text": "#f0ce52"
    }
  },
  "version": "2.0",
  "name": "Perfect World - Hishou",
  "manifest_version": 2,
  "description": "An entry for PWI personas contest. The featured landscape is beautiful and compliments Firefox perfectly without distracting ^-^ I absolutely love it."
}