I hope it doesn't, because I'm pretty close to doing it the way you're suggesting to do it. I have a copy of Photoshop (and if I didn't, my university has site licenses that I'm probably entitled to as a staff member/student) and I'm not afraid to use it. After all, it shouldn't be too difficult to just make an action to invert and (maybe) remove the orange cast…then I can use that action to bulk edit. Eh. I might as well. Once thing are set up, it's just a few clicks worth of extra work. I'll try it out on my next few batches.