As someone said in another thread last night, R&H shows were written for a specific period. In my own opinion doing that kind of concept doesn't work because what is there to gain from it other than being "hip, and cutting edge". You would also need to change the libretto to reflect the lack of Austria, Germany or the growing Third Reich. Something that the R&H Estate would never allow in a million years.
Maria can be black, Audra is black, so why can't Maria.
"I think lying to children is really important, it sets them off on the right track" -Sherie Rene Scott-