If there's any dye left after fixing, fix some more. Some films have a faintly blue base IIRC, but I haven't encountered any lately.
There's no dye in these formulas like catechol, hydroquinone or pyrogallol. The brown that p-aminophenol turns, as in Rodinal, is not to my knowledge fixed in film emulsion or attached to the image. It often happens with low sulfite developers that the developer solution turns the color of the film's antihalation dye.