I am personally not fond of the 0 0 0 color codes for pelt/markings etc.
Though, I'm a member of TEC where the 0 0 0 codes actually suit well for the character, specially after reading up on what the creatures are.
I think this depends on what kind of character you're making along with how it's meant to be designed.
TEC (The Ebon Circle) are known for their black pelt and colorful markings, they kind of stand out from the group, which is a big plus on my side. ;3