So is it humid there in the pasedena, CA? if so, you may not have a seal problem, just reguar condensation from a humid day stuck inside your lights from the air.
I would try just removing the bulb, and blowdrying. wait and see if it worked, and save yourself the trouble of removing the bumper. (which I dont get...maybe cause I have a 5gen, I can get the lights off without taking the bumper off)
anywho, couldnt hurt to try and wait and see, better than a buttload of bumper work on a lowered car, and ovens, and silicone, and cookies, and apple pie...and...oh wait. anyhow, good luck