(US) Alternative spelling of colour wheel

(pathology) Any of several medical conditions in which the physical ability to see colors is impaired, especially achromatopsia, Daltonism. / (figuratively) Indifference to a person's skin color or race.

(US) Alternative spelling of food colouring

Of the wrong color. / (idiomatic) Dirty, vulgar or obscene, especially in a way that is unpleasant. / (idiomatic) Different than usual. / (idiomatic) Feeling mildly unwell.

(usually used attributively) A simple drawing exercise, intended especially for children, consisting of a line drawing that divides the artwork into distinct spaces, the intended color of each indicated by a number and referenced from a key.

To complete such an exercise; to carry out such a technique by filling in each space with the appropriate color.

alternative form of color by number / (rare) plural of color by number

alternative form of color by number

a film punctuation in which the picture brightens until it is completely a single color

(American spelling) alternative spelling of colour television