For a brief period of time in the 1920's, Conn offered colored enamel finish on their saxophones. While we have seen a few colored enamel altos, by far the most instruments that were released in this finish were C-melody horns. Here we see 3 Conn C-melody saxophones in different colors of enamel. Note that two are the classic Conn straight neck C-melody, while one is the older style curved neck.
Photo credit: Carlo Sbisa