Wow. Every so-often I start thinking about how much I know about tech, but other times when I get to talk with people like you, I realize how stupid I am.
1. Pink, with a 3db per octave roll off opposed to a 3db per octave increase
2. Brown, with a 6db per octave roll off opposed to a 6db her octave increase
3. White
(No mighty wisdom, just an idiot that knows nothing but audio.)