Return a color-spec in the :RGB
model with components red , green and blue .
Note that short floats are used for each component; this results in the most efficient color conversion process. However, any floating point number type can be used.
The object returned by the following call defines the color red in the RGB model:
COLOR 25 > (color:make-rgb 1.0s0 0.0s0 0.0s0)
#(:RGB 1.0S0 0.0S0 0.0S0)
COLOR 26 >