I too was there in 1981 and can give you some ensight to how and why they were Brass. You can also hear a very funny interview with Jerry Kelsey and Frank Dorrite on The DCI broadcast from Whitewater . Truly a classic kelsey interview after just returning from the PInes of whitewater.
Any way....... Jerry and Frank wanted them for 2 reasons. One was to get a little darker sound and yes it looked cool and different. Part 2 is the best reason---We were only to get high Brass replaced in 81 due to funds but because they looked so different. Every camp, Robbie would come in see the Great looking horns and the really crappy horns in the same arc and get upset at the look. SO every couple of camps more sections were replaced until we got all new ones!!!!
Had they just been silver it would have only been high brass.Jerry and frank were so confident they would get a complete set they actually wrote for Flugels and Euphs that we didnt have in the old set. I always thought this was a classic story .
Frank wrote the opener and Jerry the rest but used the flugels to bridge the sound gap from lower sop to mellos sometimes mid, sometimes 4th sop and the Euphs would have a "bass trombone part" they bridged to the contra.Classic way to get a whole set of new horns that they had already written for.
Jeff Bridges