Some time ago while talking to a friend I had promised to send him rainbow colored smilies....
:) :) :) :) :) :) :)
Even maintained the VIBGYOR seq.... And i loved the effect it had on me.
It is true that colors have an effect on how u feel and think.
Came across this site today : http://www.crayola.com/coloring_application/
Good one.. I wonder how they have coded it.
I would have loved to make one.