--Copyright The Numerical Algorithms Group Limited 1994.
-- test input of Color domain
numberOfHues()
red()
blue()
green()
yellow()
b := hue blue()
red() + green()
hue red() + hue green()
red() + yellow()
red() + 3*yellow()
3*red() + yellow()
c := color 15
draw(x**2,x=-1..1,pointColor == green())
g := color 13
draw(x**2,x=-1..1,curveColor == g + 2*blue())


