I was a fan of my superman when it was a frag. I found that as it grows out, the only blue/red regions are on the "growth edges", and the rest has turned a reddish brown. This stuff has spread so that huge regions of my rock is plated in the stuff. It does grow fairly quickly. Most of my superman "areas" are in moderate light locations. This may have something to do w/ it's browning. I am looking to plate over the superman w/ a nicer looking monti that holds it's color better. I have a small patch of appleBerry that is spreading. I am also looking at purple haze as well. BTW, my tank is a 180 SPS only tank and most everything else looks great color wise. This is my most "dull" looking coral in my tank.
I hope you have better luck w/ your superman than I had.
Herb