- color-r COLORprocedure
- color-g COLORprocedure
- color-b COLORprocedure
- color-a COLORprocedure
- set-color-r! COLORprocedure
- set-color-g! COLORprocedure
- set-color-b! COLORprocedure
- set-color-a! COLORprocedure
Getters and setters for colors. color-a and set-color-a! can only be used with 4 element (alpha) colors.