The classical guitar crowd is very conservative, both builders and players. I think I have only every used natural wood colours on my own rosette designs for classicals. Furthermore I make one design and stick to it until I use up the stock and want to make a new design. The only exceptions are the copies of historic instruments and my flamenco guitar. Lately I have been using an original rosette every time I make a flamenco. This colour combination is not something I will use on a classical unless someone asks for it.