Just do a midprint filament swap... Looking at getting into TPU at the moment, it might actually be a fun way to have my kid hand something short in. 3 layers of white, 0.12mm per layer, swap to black and print 3 layers more. I'd be concerned about stringing and delamination. But it's pretty close to the heated bed, so mostly stringing. Fuckit we're going to try!
You'd need two filament colors, and it would take a while just to do one page. If it's a five pager then it could take hours. And then you'd have to turn in a big stack of plastic slabs. If you accidentally print a typo-