Another color question

[Wayne V. Citrin]

Thanks to all who answered my question on colors in sunview.  I have one
more question: Is there a "color editor" that would allow me to try out
various combinations of red, green, and blue in real time (for example, by
moving three sliders and observing the resulting colors in a window), or
do I have to do it by trial and error?

Thanks again for the help.
Wayne Citrin
citrin at soglio.colorado.edu
citrin at boulder.colorado.edu