How wide is your blade?
My .54 had a really thin (like 1/32") german silver (i.e., nickel) blade that was awesome for target shooting, but i just couldn't see it while hunting in low light, so I installed a wider (maybe 3/32") steel blade, which made a lot of difference. my accuracy suffered a little, but maybe 1/2-1 inch at 50 yards...not enough to worry about when hunting.
I also paint my sights. don't know if it's historically accurate, but making an ethical shot is more important to me.
i've experimented with white, yellow, light blue, sky blue, dark blue, bright green, and red on front blade and rear notch and by far the best combination for me is a bright yellow (not chartreuse) blade and a light blue or sky blue rear sight. It really jumps out in all situations.
the only drawback to this color combo is in our october season when there are a lot of yellow leaves. however, against a chestnut-brown deer, it should be no problem
i say experiment with some paint before investing the time inletting another sight