YOu can easily make custom end caps, if so inclined.
Just carve want you want out of wood or clay or any junk, then make a plaster of paris mold of it. Pour thickened epoxy into mold. Drill and countersink one screw hole.
Prime and spray paint with a metallic silver aerosol from the hardware store.
Techniques for plaster molding and release agents are on YouTube, but it's all pretty obvious.