the pair that i got was far less colorful than the one in the photo, much more brown and gray. i kept peacock gudgeons for about an year and empires for a little over a month now, and i must say that i enjoy the empire gudgeons much much more. they have more personality, and seem to be more friendly. it doesn't come out well in the photo, but their eyes are are very colorful.
I have kept two Empire Gudgeons for nearly a year. I agree that Peacock Gudgeons are more colorful and have more personality, but these guys are interesting in their own way. My male will color very bright orange/red for a few days every month, usually after a water change. When he does, its quite a sight. The picture here doesn't do it justice.