Could also just use a Scotch-Brite pad on the blade, to give it a somewhat satin finish that'll reduce vislbility of fingerprints. Same could be done with some mid/high-grit wet/dry sandpaper.
Having said that, I just wipe my blades with some Windex on a paper towel each day, and/or after some uses, as needed. Takes fingerprints right off. This is a good way to clean up the blade anyway, and minimize accumulating stuff that'll contribute to rust, if left in place.
A patina can hide some fingerprints; sorta depends on the pattern, to some extent. If left on a carbon steel blade too long, a fingerprint can produce it's own patinated etch (or rusted etch) on the blade. This is why I wipe them down with the Windex. To some degree, I think visible prints on the blade keep me more aware of the blade's cleanliness, and encourage me to clean it up more often. I'd rather see them plainly and wipe them off, rather than hide them in the blade's finish, potentially leaving them on too long.
David