Open your image,, Hit: Shift-Ctrl-Alt-~ ( I am not sure what the fourth one is called, but it is on the top left corner of your keyboard,,, hit,, Shift-Ctrl to invert the selection Create a new solid color adjustment layer ( it will put in the new selection automatically),,, change the layer blend mode to Multiply ( that works the best, but other Blending modes can give you startling results as well ) Double click on the adjustment layer and adjust it to your liking.