Examine source code of uchicago2

{
  "theme": {
    "images": {
      "theme_frame": "DSCN1518_3.JPG"
    },
    "colors": {
      "frame": "#a13f0f",
      "tab_background_text": "#a82602"
    }
  },
  "version": "2.0",
  "name": "uchicago2",
  "manifest_version": 2
}