This is just some cosmetic thing, but i realized once you have 2 or more characters with the same costume in your party once you enter a battle they are automaticly given different colours. So why not add the option to manually choose your colour as it seems already implemented in the game from a limited number of colour while you can buy or unlock special colours at Cuthbert's Customs. I would really like that.
It's a very old suggestion made by Wozarg when the coloured characters first came about - which wasn't currently possible with the current way the figures worked with unlocks et c. That being said, would be very nice if they sorted that one out.
I'd like an option to use the existing multiple color code even when my chars have different figures. Some of those figures look very similar from the back (like dwarf warrior/priest or elf warrior/wizard).
Oh, I'd forgotten about that! Any sort of confusion like this is a pretty compelling argument. And then, also compelling is the ability to paint all your characters purple. It's a broad matter of utility.