Stop right there!
Ok, ok - fair enough.

The red does make them look a little more sinister in my opinion - the white being a little too friendly looking.
I must say I also like Nick's "fluff" on these Daas Ak Maa, especially "the armour was forged using blood taken from the mother planet" part.
I am really looking forward to seeing some of these elusive city dwelling Martians now.