More 510-Pyro Adventures!

[esearing]

The surprising thing is if you bleach back a Pyrocat negative, the stain image turns out to be orange. Whereas I share your experience that redeveloping a bleached back print in it gives an olive-brown stain.
Since the stain image from a 510 pyro developed negative isn't all that different from a pyrocat one, my money is on a print treated the same way with 510 will also show the same olive tone.

I have only bleached an under developed FP4+ negative once that had been developed with Pyrocat HD and that turned out to be a light pinkish tan - not orange. I redeveloped to try and intensify with fresh Pyrocat HD but didn't get much more than the original stain. Maybe it depends on film stock or the level of staining. The Olive tones for the print can be achieved using the IT-8 cachetol redevelopment too. I just like the slightly warmer tone of using the Pyrocat M. the redeveloped print is also sharper to my eye but that could be due to adjacent color shifts.

[koraks]

The orange tone I got by bleaching out the silver; i.e. entirely removing it, leaving no silver halide either. You can see an example on my blog post. Perhaps the with/without silver halide explains the difference in hue we saw?