in case you haven't seen these, check out the new adidas adicolor films. they are basically free-form studies on one of 7 colors (well 5, plus black and white), each one done by a different production crew or director. for the last couple of years, adidas has been pushing the involvement of independent film in their advertising (which is awesome).
in this case, the adicolor shorts are very different from one another, ranging from whimsical cartoons to suicidal noir. below is a screen-shot of 'pink', which has been getting a lot of attention in the blogosphere.. if you go the the page, you can access the other shorts by clicking on the colors to the left.