These sketches show various colored backgrounds in an orchid painting. You see how the background affects the color and feeling of a painting.
This shows a thumbnail done as an idea for a larger sketch for an orchid painting.
Here are various color schemes for a figure painting.
This was done for a portrait of a woman with long, beautiful hair. The mirror shows her hair, and part of the cat she is holding.

This shows a change in the composition of a painting due to the color comp. I reduced the space at the top after drawing this, and changed the size of the portrait.
Here is another study for a painting.
Color compositions are done to work out color harmonies and values prior to starting a painting.. This simplifies the painting process. Comps are usually small, very loose, and not finished. They are done as shorthand for the artist, and thrown out. The public rarely gets to see them. I've included these to show part of the artistic process.