Col"our (?), n. See Color.

• (uncountable) The spectral composition of visible light
        Humans and birds can perceive colour
  
• (countable) A particular set of visible spectral compositions, perceived or named as a class
        Most languages have names for the colours black, white, red and green.
  
• (uncountable) Hue as opposed to achromatic colours (black, white and greys).
        He referred to the white flag as one "drained of all colour".
  
• (uncountable) Human skin tone, especially as an indicator of race or ethnicity.
        Colour has been a sensitive issue in many societies.
  
• (figuratively) Interest, especially in a selective area; as, a bit of local colour.
  
• (tincture): Any of the standard dark tinctures used in a coat of arms, including azure, gules, sable, and vert. Contrast with metal.
  
• In plural colours: A standard or banner.
        The loss of their Colours destroyed the regiment's morale.
  
• (transitive) To give something colour.
        We could colour the walls red
  
• (intransitive) To draw within the boundaries of a line drawing using coloured markers or crayons.
        My son loves to colour.
  
• Of a face: To become red through increased blood flow.
  
• (transitive) To affect without completely changing.
        That interpretation certainly colours my perception of the book
  
• (colloquial) To attribute a quality to.
        Colour me confused