I think my favorite color is flame, although I'm trying to buy them in all different colors -- like CompassRose said, they look so bright and cheerful together.
I have two flame pieces -- the wok and a small French oven -- because they were great buys at the Le Creuset outlet in Wrentham, Mass. I also have the au gratin dish in red; a larger French oven in blue (not cobalt, a lighter blue, not sure what it's called); and an omelet pan in jade.
They conduct heat so beautifully and evenly. I could never make a decent omelet until I got my excellent Le Creuset omelet pan.
What I'm craving is a piece in the color I think is called "citrus." (Light bright yellow).
"We reject as false the choice between our safety and our ideals. Our founding fathers, faced with perils we can scarcely imagine, drafted a charter to assure the rule of law and the rights of man, a charter expanded by the blood of generations. Those ideals still light the world, and we will not give them up for expedience's sake."
--President Barack Obama, 1/20/09