1) First make sure your image is really
black and white. Hit [ ctrl
] to desaturate it.
2) Go to your Channels
palette (tab next to the Layers in the layers panel)
3) [ ctrl
] on the top channel layer; the one that says RGB
. That will select all the "content" of your layer - but - in the sense of light (=colour presence. We're working in rgb, remember). Meaning transparency / alpha channels will be preserved in your selection - CRUCIAL!
4) Go back to Layers now and create a new layer (on top of everything). Invert your selection: [ ctrl
] and fill your selection in new layer with desired colour.
5) Now you can delete or hide the original drawing. Simply create new layers underneath the top one and paint / draw / airbrush / go mad as much as you want... You'll probably need a background layer too ...
hope this makes sense... otherwise - you can pm me if you have any problems
I should really make a proper tutorial about this...