Custom Anodizing
I have an anodizing station and am ready to help fellow overclockers. $35 per batch in black, $40 per batch for other solid colors. You provide the aluminum parts already sanded/polished. 6061 works the best. A batch is approximately the size of 10 CPU waterblocks. PM me for details/questions.
The anodizing is Type II, class 2, almost any color is available. A "Hard" anodize can only be black or clear.
A type 2 anodize is hard enough that it cannot be scratched with steel wool. It was very difficult for me to scribe a line in one piece after it had been anodized.
I have not been able to find pure aluminum anywhere. 6061 is the most readily available alloy, and is inexpensive. I put that disclaimer there as a warning, since some aluminum alloys will anodize just fine, but they will not take color.