Normally when I make a dilution of Neutol, my paper developer, it looks a bit yellowish. After using it for some time it turns out to be dark yellow. And after that time, let's say a month or 2, I refresh it. That was how it used to be. Today, if I make another dilution, it does turn out to be yellowish again, but now after 2 weeks of usage the developer doesn't just turn dark yellow but almost red!!! How the heck is this possible? Might it be bad for the prints? It might be possible that some of my prints weren't really as black as they should have been today.