Since I posted an old coloured pic of Nessus, I figured I should post another with his changed colouring. I have many.
Here he is in a mostly finalized colour scheme, from late 2005 (sometime before the Christmas sketch). His design has not changed much, beside personalizing his facial features and improving my horse anatomy. I'd only just learned to draw centaurs, and Nessus was more or less a result of experimentation.
This is still, by the way, how he a Kendrea first meet. Although she is much, much younger at the time than she is here.