Lp glass drums are just ultilitarian drums. Your custom retoration w/ art is a great idea ! Many Asian made drums are all the same except for brand bage & some differences in hard wares and exterior finishes. Many custom finishes on the market are a result of making a more diverse & appealing visual product any way. Your idea of custom finishes is valid. How ever, auto paint & air brushed art is not as durable as Glass resin gel coats, but a clear coat would protect the art. The art may exceed the worth of the drum ! ? I love refurbishing vintage drums etc but in the case of less collectable latin Drums / Congas /Timbales etc, I often change lame hard wares & mountings to more dependable & practical alternatives. I recycle old parts & find new ways to make them useful. Here an example of my recent timbale hybrid of 1990's Afro / Pearl timbale shells w/ 1960s' Leedy lugs and 1930's WEL eagle claws that I polished off the nickle plating to reveal the brass claws. I built my own rims years ago and used them on this project w/ my own mounting system & powder coated them red & added Remo Ebony drum heads.
Ernesto Timbalero.jpg
A good alternative paint job on glass congas is Pin Stripes or art designs from the wild LP record album covers from the 50"s & 60"s ! The original colors are pretty lack lustre. Other sparkle styles are to gaudy and in some case ugly as well as cost prohibitive if you do it for $$ resale.