Why Is A Green Room Called A "Green Room"?

Question 

I have always wondered why is a green room, called a green room? 

John, Derby

Answer 

**Definitive**

Name: James O'Brien

Qualification: Avid listener of Mystery Hour

Answer: Origin comes from Stratford, at a school where they put on plays. The room next to the stage where the actors got changed and where the council met was called the "Agreeing Room". If you had a Warwickshire accent it would sound like “greeing room” and that is where green room comes from.

Round of applause for James!!