A black and white photo hey, maybe it'a a gray scale.. :P in photshop land bit-map is normaly Only 2 colours black and white (though technically the debate continues wether they are colours or not - any way hehehe we'd like to help if we knew what you wanted... try this image -mode -rgb desaturate posterise (4) new layer (blend mode overlay (or multiply) fill with a colour hehehe red+grey will always make a desaturated colour (well depending on the opacity and blending mode.