http://i15.photobucket.com/albums/a380/lonewolf5347/P1040007.jpg
I would try some LMF browing chemical,slow rust brown and some say if you go with the instruction when the brown color is were you want in just drop into some boiled distill hot water and it will turn dark blue.
Keep me in mind if you want to part that rear sight on th renegade,I am looking for a square rear notch sight that were on the older renegades