Examine source code of GM Forum

{
  "theme": {
    "images": {
      "theme_frame": "Header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "GM Forum",
  "manifest_version": 2,
  "description": "A persona for GM Forum, an online forum dedicated to GM cars and trucks.  Join for free and chat about maintenance, performance, audio, car electronics, detailing;  share pictures and videos;  or maybe even try to win Car of the Month."
}