basic
capital
direct
essential
first-hand
first-string
important
of import
original
particular
special
underived
Maxwell triangle
Munsell scale
ab ovo
abecedarian
aboriginal
all-absorbing
antenatal
anterior
arch
austere
autochthonous
banner
bare
basal
basilar
beginning
bottom
budding
by-election
cardinal
caucus
central
champion
chaste
chief
chromatic circle
chromatic spectrum
chromaticity diagram
closed primary
color circle
color cycle
color index
color mixture curve
color solid
color spectrum
color system
color triangle
complementary color
congressional election
constituent
constitutive
contested election
controlling
creative
crowning
crucial
bird
planet
plumage
celestial body
coil
flight feather
heavenly body
pinion
quill
quill feather
multiple
secondary
various