User blog comment:Príncipe de España, Felipe Giorgio Clemente/Assassin's Creed, known for no purple hooded Assassins./@comment-27202257-20140625043732

It actually might be cool to be able to dye your clothes whatever color, and see how the populace reacts to you. For instance, for a long time purple dye was so hard to come by in some places that only royalty wore purple clothes. How would that work if you actually scrapped together the cash to get yourself a purple hood?

I think the logic, though, is to keep the dyeing options simple and easy to program. That'd be my guess, at least.