Uh, aesthetics are highly subjective, to an extent that you should at least try to convey what sort of tone you're looking for, lest suggestions be little better than random ideas. That the Kat hats don't tickle your fancy is one data point. Add more data points and we have a much better chance of coming up with a regression that at least vaguely recognisably correlates with your aesthetics; GI-GO, you know? For what it's worth, I like how those hoods call attention to how the gunner seem to be related to and maybe even based on the magic bottoms.

"Fancy" here means that somewhere on the item you should see some desaturate purples on the blue side of magenta, somewhere in the neighborhood of Lilac. Looking at the picture on the wiki, I see it combined with a much darker and deeper purple and a strongly contrasting brown. At risk of providing example of GI-GO in action, the next thing to come to my mind after Magic set hood is the jelly helm, with similar "Fancy" purple and earthy brownish colour, but with yet another very different purple in the Magenta-like face shield. That preponderance of purples should give a striking appearance, esp. if your knight colour is a juicy green colour, as that would contrast optimally for "pop" as with the Virulisk set.