in the context of character costumes so far (also the clarity of some scans may have lead me to some wrong conclusions)

ermac - red and black
kenshi - red and black
noob - black
sindel alt - blackish?
hotaru - black armour, red flags
sub zero - 50% black
scorpion - 50% black
skab - black and red

other characters i've yet to see which i assume will have a predominantly black colour.
smoke
kabal

then there is lui kangs spirit which should be predominantly red...

is there too much black and red?