achromatic
neutral
ash-colored
ashen
cineraceous
cinereous
cineritious
favillous
ashier
ashiest
chalky
corpse-like
creamy
deathly
gray-black
grayish
greenish-blue
greyish
gunmetal
livid
opaline
pasty
pearly
powdery
roseate
russet
sallow
waxy
flashy
splashy
trashy