That looks yellow?
They are XM 10Ks. I used to run Helios 20K, but I got tired of the dim, blue look. Unfortunately, there aren't any decent bulbs between 10K & 20K.

Helios 20K W/ 2x 160W Super Actinic VHO

XM 10K w/ 1x 160W 454nm actinics
I'm definitely enjoying the truer color rendition of the 10Ks. If anything, I'd add a set of super actinics, instead of running a bluer MH bulb.