how to make one color stand out &everything else black&a

[BandGeek2791]

Okay i am trying to figure this out and i dont even know if you can do this with paint.net. But i am trying to take a picture of mine and make it black and white but leave my shirt red. Is there any way you can do that on paint.net?

[Crazy Man Dan]

This tutorial explains exactly that:

http://paintdotnet.12.forumer.com/viewtopic.php?t=4196