dougal85 wrote:kinda like that yeah, but i was hoping to keep the black ... black and make the white a light blue...
so instead of being grayscale ranging from white to black, its grayscale ranging from blue to black
edit but how did you do that?
Well the white in the bluish tinted picture above really is a light blue, if you mess with the levels a little bit you may achieve the results your looking for.
Image>Adjustments>Levels
The method to the above image is actually quite simple. Make a new layer above your base layer, choose a dark blue color and fill the new layer with that color, and then change the blend mode to overlay or soft light. Once again adjust levels to get the result you need.