Is there any way for PHP to put a color treatment on an image? For example I would like to be able to take a photograph and make it a duotone, or put a transparent layer of 50% opacity over it?
I have looked through the manual and found nothing relating to what I would like to do? I was thinking it would be possible with a png to make a 24bit transparent layer (of the specified color) and position it in HTML over the intended image? But I would like to do this without doing the above and if possible without using a png....
