HTC will soon offer the HTC One Max in red for the mobile operator FarEasTone Telecommunications, as you can see below in the image. Others, who don't live in Taiwan, will only be able go get the silver version (at least for now).

There is no official statement from HTC about the color, but the promo materials look promising. Still, if you really want a red HTC you can get the HTC One in silver, blue, black and even, yes, you guessed it - red.

Source 1, Source 2