If you want the wood grain to show, yet have the color be brass-like, here's something to try. Use ash as the wood for the bells. After turning the bells, bleach the wood (2-part wood bleach). You will then have a light-colored, almost white wood to apply a brass-color dye to (you might have to experiment here with mixing dyes).
After dyeing, spray on a couple coats of lacquer to get a good coat of finish. (The rattle cans of Deft brand lacquer work the best for me.)
Gently steel wool the lacquer, then apply some sort of brass-colored liquid paint to fill the grain (look in the craft stores for small jars of liquid brass paint). Steel wool the surface again, gently, to remove the paint from everywhere but the open pores.
Ash is a ring-porous wood, so the liquid paint will remain in the grain of the wood, yet be removed from the solid wood. This brass-colored paint will give the look of shiny metal, and will emphasize the grain pattern, not hide it. Try to achieve enough of a difference in color between the dyed wood and the paint used to fill the pores.
Betty Scarpino, editor, AW