- color-list? x #!optional typesprocedure
Returns #t if x is a valid color list, i.e. a list containing a color type symbol and 4 numbers. It does not check that the numbers are in the typical range.
types can be a list of symbols to check that x is one of the specified color types. If types is omitted it defaults to +web-color-types+, so it checks for any supported color type.
(color-list? '(hsl 1 2 3 4)) ; → #t (color-list? '(hsl 1 2 3 4) '(rgb rgb%)) ; → #f