There is a book and video from Marshalls. I would look for them on amazon. Otherwise here are a couple links:

http://www.bkpix.com/technique/handcoloring1.php

http://www.shutterbug.net/techniques...3sb_handcolor/

http://www.freestylephoto.biz/pdf/Ha...22handcolor%22

I think that infrared images are great with some hand coloring.

Oh, check out Kathy Harcom's site for some examples.

http://www.kathyharcom.com

Once you have tried it, feel free to ask more specific questions.

cheers,