Apple does it for the iPod. Heck, even the normally staid RIM did it for the BlackBerry. So it would seem logical that, according to what's supposed to be a leaked inventory sheet, AT&T will introduce a "Deep Red" colored iPhone in time for the holiday season.

Is red the first of many new colors available for the iPhone? There's now way to tell right now. But I wouldn't be surprised if it is.

As you can see from the screen shot (originally posted on the blog Engadget), the supposed stock sheet shows not just a 8GB red iPhone but a 4GB version as well. That's kind of strange considering Apple discontinued models with that storage capacity back when it drastically cut the iPhone's price by $200.

In addition to revealing a new more colorful iPhone, the purported AT&T inventory sheet reveals the carrier may be adding two new Sony Ericsson models, the Z750 and K850—with 3G for both and a 5 megapixel camera for the latter—to its handset lineup as well.

It also lists a few additional 3G phones: the Samsung BlackJack II, Motorola Z9 slider, and LG's all-touch screen Prada.