That looks like a good option, but I have like 20 of these files and I don't want to do it manually. Is there an effect or something that would automatically do that so I don't have to manually do that? I've been using batches and automatic processes to go through each bitmap.
1 person found this helpful
It took about 30 seconds.
I selected the grey colour with select color range.
Added a layer layer mask hiding that selection.
Then added a layer style with the black stroke. (that layer style could be copied and pasted to other layers).
Actually re-reading that I missed a step.
Before doing any of the above, I duplicated the layer. Then.... selected the grey......etc
That way the original grey showed underneath the masked layer