Yes that is what would happen; the undeveloped silver would slowly darken, especially under UV to green light. you could also fix them but don't rinse, which would give you a brown stain as the silver slowly converts to silver sulphide. If you have a brightly-lit space, you could print with a non-analogue ink-squirter using cheap dye-based inks which quickly fade in bright light; done this way the colour balance would alter as the inks degrade at different rates. But you didn't hear that from me on APUG...
Originally Posted by afrank