I kinda think the simplistic costume works on him! Not too showy, but it doesn't have to be.... his wand-powers are the real star of the villain ensemble. If you saw his debut appearance, "The Flash #110", his haircut is kinda dorky, but I think it blends with the simple outfit rather well.
I though he was okay-ish on the show, they just didn't really let him do anything. they definitely need to get some awesome rogues storylines going, with the exception of a few cold/heatwave/glider episodes, they've really been wasted so far