It's the color mentioned in the song that's also one of the colors in the U.S. flag
Supporting the shield are two woodcutters, the one on the right 
holding a .... Its general colour is dusty brown with a white fringe around the eyes 
and lips,... [DOC] [TLE] How to Follow National Anthem Etiquette | Collins Flags Blog [PAR] Feb 25, 2014 ...