Anyone open theirs up yet?? Just currious how the green glow gauges (stock) work. Meaning, how hard would it be to change the color?? (I am thinking that blue or red would be nice) I think it would give a nice custom look to my interior. Wasn't sure how they work to begin with, if there is a clear bulb with a green film or something, or if there are just green bulbs that I could change out? anyone have an idea here?? perhaps some different color leds??