Another thing you can do try, just add a little fluorescent orange paint(Just a couple drops) to resin or epoxy.Use a lite colored wood for your handle material(like birch) and when you have it finished mix the paint-epoxy and apply with your finger. Just try it on a scrap piece first, I've done several handles using clear fiberglass resin, I finish handle, buff, wipe down with acetone and apply resin, let it set just a little while and rub with a small piece of cloth soaked with acetone to smooth, just don't wipe to hard, let set and apply again. Makes for a water proof handle.
I've not tried to color a handle this way, it might work.But fluorescent paint will show better if it is applied to a white or real lite colored surface.
Good Luck
Bill