You could make the section out of brass and give it a baked enamel or baked epoxy finish to make it look more like ebonite or resin or plate it, maybe drill the body out full length and add a lead or brass rod to fill the unused part of it.
I've made sections from brass and they look pretty good just polished and clear coated (to prevent tarnish) but I find Ii like lighter weight pens, and particularly like them sort of evenly balanced from the middle instead of front or rear weighted (but that's just my preference).