A few toners come to mind
Tannic acid bath blue/brown to purple
5 min in tannic acid followed by soaking the print in sodium
carbonate hen wash print
Tannic acid 6 grams
water 180 ml
Sodium Carbonate 6 grams
water 180 ml
for the real die/hards
Ammmomium hydroxide brownish/black
Soak print in a solution of ammonium hydroxide to get the
intended color. Wash print afterwards.
18% Ammonium Hydroxide 10 ml
water (distilled) 100 ml
Note!!!!!!!!!the last and only time I tried this tonner we cleared the
lower level of photo/dept at Otis college of art and design....work out
side with one
hope this helps jp2/jpp