I think the answer is <span>The 1844 Treatise on Modern Instrumentation and Orchestration. This handbook was created by Berlioz to introduce the aesthetic of the expressive music of the opera. The handbook was also used as a principle on how to create similar style of Bach and to the other romantic composers during their time</span>
Well, it depends: If your friend wants something dark-er, than blue, then I would pick purple. While blue can be a sort of brighter color for certain situations.
