Nope, they don't even notice him unless he shakes up some leaves in the enclosure! He hasn't ever shown dark colors or gone to hide when they are there. He actually eats out of his feeding cup with them right there and doesn't seem to mind .
They seem to like watching the mister when it comes on and they go crazy for an escaped cricket! I've nicknamed the cats Hoover, Dyson, Bissel and Eureka whenever a cricket is on the lose!