How do I highlight one color in a black and white photo?

I want to take a picture and be able to put it in B%26amp;W and then select a color (ex. pink) and just the pink hues in the picture will be drawn out. I believe that there is a program on Macs that has this as a feature but I use a PC and don't know how to do it on my photo editing software (I use Picasa2). I've read the ';magic wand'; tool ideas but that's NOT what I'm looking for. I don't want to highlight just one feature in a picture. I want to bring out just 1 color in the picture. Any ideas?How do I highlight one color in a black and white photo?
online:


you can use http://www.picnik.com


* upload image


* click the ';create'; tab


* click ';black and white';


* ';paint'; the colored area you want





Video for picnik:


http://flickr.com/photos/curiouskiwi/249鈥?/a>





in photoshop:


http://digital-photography-school.com/bl鈥?/a>





in GIMP


http://www.gimp.org/tutorials/Selective_鈥?/a>How do I highlight one color in a black and white photo?
Open the image you want to edit.


control J to make a copy


Desaturate that image using adjustments


Now that it is black and white add a layer mask by using the add layer mask icon. It is at the bottom of the layers panel


Get a brush tool.


change your forground color to black


Paint over the area you would like to reveal in color.



In photoshop try copy layer, desaturate the first layer,


on the second layer select colour range, select the pink,


then select reverse and delete everything else in that layer.


Then tidy it up and merge the layers.


:)



Download a free trial version of Photoshop.
Its selective color. Search these posts. I've answered it 3 times in the past two days.