I've finally found a solution.
I have to take pictures outside, during the day due to the fact that all light-bulbs in my house emit crappy yellowish light.
And the best thing is that my new, "better" camera can't compensate that.
Anyway, here it goes...
My WIP Slaanesh sorcerer.
A few small areas still need to be painted, but basically, he's just waiting for the last series of highlights.