I am looking for a way to eliminate a colour from an image. I hope to achieve an effect similar to what you can do through Image -> Adjustments -> Black & White. In this, you can use the sliders to make a certain color register as black or white in the resulting colourless image, and if you then go through the Layer Style Blending Options you can remove either the black or white sections, making those areas transparent. Effectively, this allows you to 'cut out' entire chunks of certain colours, but it doesn't really help me since you are left with a black and white image. Does anyone know how to work around this?
I have found a way to do this, but it is not the most elegant solution. It seems like there should be a more 'automatic' way to do this in PS, so let me know if you know of one.
The solution I've found involves copying the image you want to remove a colour from onto a new layer. Then, with one of the layers, go through the Image -> Adjustments -> Black & White process as mentioned in the first post. Go into style blending options and remove either the white or black, and merge it with a blank layer. Then CTRL + click that layer to select everything, and apply it as a layer mask to the copied image (which should still be in colour).
As I said, this is a rather long way to achieve the desired effect and I'd appreciate a simpler method.