Well, if you ask them nicely ...>>191987419
From what we can tell from their receptors, their colour perception is not that different from a normal human's. But the details of that are kinda hard to determine, considering we're not even sure that other humans' color perception is the same as ours.
It is possible that they can recognize a bit more in the ultraviolet and infrared parts of the spectrum.
In any way, they would probably draw about the same a human being would, given they'd use the same colours and were able to handle pencils.