Bulbs not firing as blue (xm20k)

[gobytron]

IME, all halides have to "burn in" to some degree.
You'll want to give them 20 or 30 hours of use before they get to be their true colour.

It was about 20 or 30 hours with my bulbs anyways.

[parkinsn]

with MH's your technically supposed to burn them for 24 hours stright to get the proper color. It will take a few days before you get the true color of the lamp.