I couldn’t find this in the forums or on Google, so here goes:
I have an image I’m turning into a tshirt. It’s a greyscale Photoshop composite that I’m outputting to PNG. Right now, it’s black image on a white background to be printed on a white shirt. I’d like to print on a green shirt with white graphics. Any idea how I can change the image’s color table from ranging from white->black to transparent->white?