…on how to do selective colorization using Graphic Converter for the Mac? The only tutorial that I have found is for PS, which I don’t have, or by downloading and eventually buying a new program just for this one application, which I just want to play around with.
Gimp is free and can do a selective colorization by going into hue-saturation under color tools and reducing the saturation of the colors you dont want.(there may be a better way to do this but thats just the way i had figured out how to do it quickly)
Gimp for mac http://www.gimp.org/macintosh/ is there. the Gimp is what all the cool (and cheap) kids are playing with now. there are tons of tutorials for it. Google will find them.
So youre trying to just keep the color of one object, not just one color right? The only way that I know of to do that would be to select the object that you want and then reduce the saturation on everything else.
One way: copy the image into 2 layers, make the top layer B+W, and then add a layer mask with the object you want to keep being transparent in the top layer mask, letting the color version show through.