I think Burnished Brown looks terrific in its original form. It is very difficult today to get a quality repaint in a single stage as the factory did many years ago. The new clear coats will look beautiful on your car, and likely give you plenty of flash.
When my Olympic Gold was done almost 10 years ago, the single stage was tried, but with poor results. It was removed and followed up with Glassuit two stage clear. It ended up fabulous, and really makes the Gold stand out in the crowd. The downside is, I just did a Concours in Carmel for the Monterey Week, and was dinged by the judges because of the clear coat. I don't know about judging elsewhere, this is the first time I've been penalized. The upside is the paint should last a very long time, and they tell me it is very easy to repair.
My personal taste is to keep them original. The original colors and look really puts them back in 69.