There's a morph that says something along the lines of : "Your ability to make money has reflected on your weapon, making it look more intricated" I made about 5k and it made my rifle and hammer look very intricate, actually. About the sword, though, my first morph : "The time you have spent with your weapon has reflected upon the *something* of your weapon" I didn't use it much at the beginning, so now it looks all rusty. It does have a bronze color to it, though, so I'll figure out which morph exactly was used to make it that color tonight.
What MP said about the Hollowmen and the physical look was actually quite right. My sword has a bone hilt with a bone hand guard wrapped around, the hammer has a full bone handle, and my pistol has a crescent shaped bone for its handle. Not sure about anything else though, my rifle's handle was morphed by my friendly interactions with townspeople lol.
Also, all of my weapons have a lot of will lines covering them, on the head of the hammer, down the barrel of the rifle, and down the sides of the blade for the sword, though I've only gotten level 1 magic, I have gotten all but Force Push. Not exactly sure what exactly makes them.