This makes perfect sense to me. Leo loved cars from a design and styling perspective and the Jaguar really shows it with all the chrome panels, switches and the automotive paint colors he used from that era.
For example; Fiesta red is 57 T-bird red and Daphne blue is Chev Bel-Air blue. Some of the first metallic car paints were used on Fender guitars. I think the silver was a Corvette color.
The ZZ boys are car freaks and love hot rods as well.
Not practical as someone else mentioned, but it makes perfect sense in context.
You have to admit the burnished aluminum pickguard is cool.
