opposites...

I read an article about underpainting.  I was surprised to find out there are benefits  to using complimentary colors as the base for underpainting.  I thought I'd give it a try.

Set up a simple still life.

Drawing done with blue chalk pastel.  Background is acrylic in medium gray.  Underpainting with complimentary colors.  

It'll be fun to experiment with this...need to let it dry and mull over...