I didn't really change the colors at all, I used the colors as they came. I kind of have to because I'm colorblind to a degree. What I see it as, is not necessarily how the majority see it. What I did do, however, is re-skin the armor blocks. Since you created the ships, they have added things like different skins to the armor blocks. You can make them look like polished silver, concrete, gold, rusted out blocks, etc. I used the "Scifi armor" texture because I thought with the black scheme it fit the Necrons rather well. Changing the skin can change how a selected color comes through.

WOW You made a Fantastic Work! ANd i see you change the coloring to the Kronous colors. Cool. I love both dark and grey-ish schemes. You made a Fantastic work with it. :)