dark rainbow drawing I

This is a drawing entitled dark rainbow I. It was made in September of 2009, and preceded the obscured rainbow drawings. Sometimes drawings happen quite quickly, and follow on from one another with an ease that always takes me by surprise. This drawing was made within hours, and suggested itself to me as I worked.
The obscured rainbow drawings were begun in a rush, but finished slowly over the ensuing weeks, and I almost destroyed them before they were finished.