Color designs are probably my favourite part of the job. Basically, these are quick and loose sketches that are done to help visualise scenes better. The focus is on color and light, not on models or details. They usually go through a couple of revisions. Sometimes they end up quite close to final work and sometimes not. Commercials production is probably more freestyle and organic then movies so there is more margin for changes throughout the process.
First two images come from the second Alice trailer (look for links a few posts back) and were done with Passion's Stu Hall who was supervisor on the job. Third image was done for the first trailer.