How to have a picture in black and white with some parts in color?

i have aperture 2. I have looked at the tutorials and i still can't find how to do it. It doesn't really say anything about what i'm wanting to do with my picturesHow to have a picture in black and white with some parts in color?
aperture 2, ~mac


http://www.apple.com/aperture/


tutorials,


http://www.apple.com/aperture/tutorials/


with the inspector you can adjust colored image to b%26amp;w, and sepia or colored as whole, yet theres no color spotting,


http://www.apple.com/aperture/tutorials/…





Gimp.app; mac ~with this you can open image, duplicate layer, adjust desaturate / saturation, and erase objects for color,


http://gimp-app.sourceforge.net/





ChocoFlop - Photo Editing for Mac OS X


http://www.chocoflop.com/screenshots/


Seashore -


http://seashore.sourceforge.net/screensh…





..How to have a picture in black and white with some parts in color?
search for 'selective saturation'


it'll take you through and show you how to do it in photoshop or whatever...





try 'selective saturation lips' or whatever it is. There are quite a few examples on it...