Hello all!
below you can see the cover of the Black Library book "Galaxy in Flames"
I'd like to paint my marines in the colour depicted, but I struggle at painting the white-ish armour. I don't really think it's pure white, also in the book itself it is referenced as marble like colour.
I need some serious help with this, and I was looking for the talented people here to help me out with advice on how to paint this!

cheers,
M
EDIT: 6mm of course, Epic FTW

I don't need the "lines" in the marble, I just want to get the colour right, so my marines don't look like Space Wolves or White Scars..
