Weirdly, my Art Asylum Enterprise-A turned yellow practically overnight (well, three months) being packed away in a box because of a move.
I’m thinking I might gold-plate it or something, because I’m not going to try to figure out how to reapply those markings.
Same thing happened to mine. I've been thinking about painting it, and getting some custom decals printed. It's quite an odd scale so nothing off the shelf exists.