Hi, I can do the painting in vertex setting/ object mode but can not render it. What am I missing?

You'll have to add an attribute node to your node tree and hook up the color output of that to the color input of your shader node. Then, change the name property of the attribute node to name set in the dynamic paint settings. 

Here's an image from a similar process:

Thank you so much for your reply.

I followed the example you provided and still cannot get this to render. I have been over the details many times. It seems odd to me that I can render the displacement but not the color.

If you care to, any further suggestions would be appreciated.

Roy