To find out what colors are defined in the color database, use the function apropos-color-names. For example:
(apropos-color-names "RED") =>
(:ORANGERED3 :ORANGERED1 :INDIANRED3 :INDIANRED1
:PALEVIOLETRED :RED :INDIANRED :INDIANRED2
:INDIANRED4 :ORANGERED :MEDIUMVIOLETRED
:VIOLETRED :ORANGERED2 :ORANGERED4 :RED1 :RED2 :RED3
:RED4 :PALEVIOLETRED1 :PALEVIOLETRED2 :PALEVIOLETRED3
:PALEVIOLETRED4 :VIOLETRED3 :VIOLETRED1 :VIOLETRED2
:VIOLETRED4)
For information about only aliases or only original entries, use apropos-color-alias-names or apropos-color-spec-names respectively.
To get a list of all color names in the color database, call get-all-color-names.
CAPI User Guide and Reference Manual (Windows version) - 25 Feb 2015