Thanks for the link Judy, there is some good info there. I love the
"transparent photo over the painting" idea. Everyone would be different and
each would mean something to the student who created it. Maybe preceded by
reading a short
picture book like "my many colored days" by Dr Seuss or something elese on
the signifigance of color.
Looking deeper into Susan Rodriguez's book I realize there is some great
stuff in there too.