Gonk:

The color code for cables was originally put together during the initial round of THX certification for cables, but it has long since be standardized as EIA/CEA-863. Although the color coding is apparently required for cables to be certified, it is not proprietary to THX, and anyone who wants to buy a copy of the standard is free to apply it to cables and/or components. For a variety of reasons, the color coding scheme has been adopted more for receiver and processor rear panels (by the Outlaws and MANY others) than it has been in interconnects other than the obvious L/R and video (yellow for CVBS and GBR for Y/Pr/Pb). It's undoutbedly a matter of inventory for retailers: easy to stock interconnects in pairs, but harder to stock and/or anticipate need for center and surround connectivity applications.

Of course all that will change to some degree when HDMI and similar take over -- but that ain't gonna be for some time with legacy devices still out there for the next century or so.

Have you gotten a home theater for the "Gonk-ette" yet? "My First Outlaw"?