I can't answer to what will happen on a lith-treated print, but I do have a reference to a Sodium Chloride/Potassium Ferricyanide bleach as giving warmer tones. This is for sepia toning, nominally. 6.6g Sodium Chloride to 35g Potassium Ferricyanide made up to 1l.


(Creative Elements, Ephraums E., Amphoto 1993)