Source : Webster's Revised Unabridged Dictionary (1913)

Colour \Col"our\, n.
   See {Color}.

Source : WordNet®

colour
     adj : having or capable of producing colors; "color film"; "he
           rented a color television"; "marvelous color
           illustrations" [syn: {color}] [ant: {black-and-white}]

colour
     v 1: modify or bias; "His political ideas color his lectures"
          [syn: {color}]
     2: decorate with colors; "color the walls with paint in warm
        tones" [syn: {color}, {emblazon}]
     3: gloss or excuse; "color a lie" [syn: {color}, {gloss}]
     4: affect as in thought or feeling; "My personal feelings color
        my judgment in this case"; "The sadness tinged his life"
        [syn: {tinge}, {color}, {distort}]
     5: add color to; "The child colored the drawings"; "Fall
        colored the trees"; "colorize black and white film" [syn:
        {color}, {colorize}, {colorise}, {colourise}, {colourize},
         {color in}, {colour in}] [ant: {discolor}]
     6: change color, often in an undesired manner; "The shirts
        discolored" [syn: {discolor}, {discolour}, {color}]

colour
     n 1: any material used for its color; "she used a different color
          for the trim" [syn: {coloring material}, {colouring
          material}, {color}]
     2: a race with skin pigmentation different from the white race
        (especially Blacks) [syn: {color}, {people of color}, {people
        of colour}]
     3: (physics) the characteristic of quarks that determines their
        role in the strong interaction; each flavor of quarks
        comes in three colors [syn: {color}]
     4: interest and variety and intensity; "the Puritan Period was
        lacking in color" [syn: {color}, {vividness}]
     5: the timbre of a musical sound; "the recording fails to
        capture the true color of the original music" [syn: {color},
         {coloration}, {colouration}]
     6: a visual attribute of things that results from the light
        they emit or transmit or reflect; "a white color is made
        up of many different wavelengths of light" [syn: {color},
        {coloring}, {colouring}] [ant: {colorlessness}]
     7: an outward or token appearance or form that is deliberately
        misleading; "he hoped his claims would have a semblance of
        authenticity"; "he tried to give his falsehood the gloss
        of moral sanction"; "the situation soon took on a
        different color" [syn: {semblance}, {gloss}, {color}]
     8: the appearance of objects (or light sources) described in
        terms of a person's perception of their hue and lightness
        (or brightness) and saturation [syn: {color}]

Source : Free On-Line Dictionary of Computing

colour
     
         (US "color") Colours are usually represented as
        {RGB} triples in a {digital} {image} because this corresponds
        most closely to the electronic signals needed to drive a
        {CRT}.  Several equivalent systems ("{colour models}") exist,
        e.g. {HSB}.  A colour {image} may be stored as three separate
        images, one for each of red, green, and blue, or each {pixel}
        may encode the colour using separate {bit-fields} for each
        colour component, or each pixel may store a logical colour
        number which is looked up in a hardware {colour palette} to
        find the colour to display.
     
        Printers may use the {CMYK} or {Pantone} representations of
        colours as well as RGB.
     
        (1999-08-02)