aqua,aquaer,aquaest
beige,beiger,beigest
black,blacker,blackest
blue,bluer,bluest
brown,browner,brownest
carmine,more carmine,most carmine
charcoal,more charcoal,most charcoal
cinnamon,more cinnamon,most cinnamon
crimson,more crimson,most crimson
cyan,cyaner,cyanest
green,greener,greenest
grey,greier,greiest
indigo,indigoer,indigoest
invisible,more invisible,most invisible
ivory,ivorier,ivoriest
lavender,more lavender,most lavender
lemon,lemoner,lemonest
lime,limer,limest
magenta,more magenta,most magenta
mahogany,more mahogany,most mahogany
maroon,marooner,maroonest
mauve,mauver,mauvest
navy,navier,naviest
olive,oliver,olivest
orange,oranger,orangest
pink,pinker,pinkest
purple,purpler,purplest
red,reder,redest
rose,roser,rosest
rust,ruster,rustest
scarlet,more scarlet,most scarlet
teal,tealer,tealest
transparent,more transparent,most transparent
turquoise,more turquoise,most turquoise
umber,umberer,umberest
violet,violeter,violetest
white,whiter,whitest
yellow,yellower,yellowest