www.productwizard.com is local to me (within a hour and a half drive) and you can ask Steve (the owner) to test the light for tint.
I bought my U2 this way, got to see the tint before I bought it. The tint was very acceptable (not CU green, blue, or overly yellow.)
You can send it back to Surefire too. I sent my bro's L2 back because it had a donut hole and was off colored. I am still waiting for the L2 to come back (will keep you posted on turn around time (arrived at Surefire last Friday night.))
Everyone is subject to the Luxeon lottery unless you know a way to fix the lottery /ubbthreads/images/graemlins/smile.gif (getting a hand selected light)