And interesting UI/UX lesson would be to keep in mind colourblind people. Almost every time someone posts some graphs or stats I can't read the graph at all. I think having numbers and colours helps a lot.
Just out of curiosity, would an colorblind setting in the graphic drive help at all? What I was thinking, for example, if you are red/green colorblind, then compress all the red values to one end of the spectrum, and all the green values to the other end. Or some other remapping scheme, based on the type of colorblindness.
Very true, colours ONLY is a poor idea. However well chosen colours, especially taking into account most common colour blindness limitations, can certainly aid in quickly comprehending related items in a UI.