Just by judging by posters who talk about their red-eyes here it seems that red-eyes are more nocturnal than white's. Is there any way you could leave insects in a steep bowl overnight and see if they vanish? Or are you already doing that?
It may just be settling in. If there's no change I might try a heat emitter instead of a light to see if the frog's sensitive to the lighting. (Just a hunch.)