Yes, this is a contest that has been done before. But, with the permission of the person who originally thought of this idea, I am making Colors! 2.
So the basic gist is, pick a color, any color, and describe it in any way possible. Do a poem, do a story, an essay, whatever suits you best. For ideas, you might want to look at the first Colors! by RT Cipher. It can be your favorite color, or the one that you despise the most. Think outside the box, if you will.
BTW, here's a funfact. Did you know you cannot explain what a color looks like to a blind person? Try it!