Dull silvery white.
green or some dull colour
either white or a dull yellow colour
Dun could be a dull greyish-brown colour, or a horse.
Many animals are dull colored in order to better blend in with their natural habitats and avoid predation.
drab means dull, uninteresting; of dull brownish colour. drabbing however, is a Shakespearean term implying whoring or visiting prostitutes.
A clothing moth is a small, winged insect with a narrow body and a wingspan of about half an inch. They are usually a dull brown or gray color. You can identify a clothing moth by its size, color, and the damage it causes to clothing and fabrics.
Mustard.
My mother had bought me a new bucket of 'Nipton' paint to decorate my room, but I didn't like the colour because it was too dull.
Because dull black is the best colour for spy aircraft
It can, but is usually more of a gray colour.
Male woodlouse tend to be a dull brown colour. Depending on the age, that colour generally fades to more of a grey.