Oh yes. All of my senses get dialed up and I notice everything---how bright the colors are, how things smell and taste, what things feel like and all sorts of sounds that I don't pay attention to when I'm at baseline. That's the lovely part of hypomania. When I tip over into mania, however, those things all become highly irritating and overstimulating, not pleasant anymore. So yes, I do know what you're talking about.