custom keyword colours

Is there any chance of adding the ability to have groups of custom keywords with different colours? For example make certain keywords red, others green, and so on. Either by being able to set a colour for each keyword or by assigning each keyword to a group and setting the group colour. Would be very useful for me if possible, thanks.

Edited by simonWasHere on Reason: Initial post
It just so happens that I have plans to expand the size of the color palette for similar uses already, so I don't see why I can't do this too. Look for it in the change notes of the next build!
great, thanks :)