Ceiling plaster was applied in one continuous operation by recruiting a large team of plasterers from miles around, who worked around the clock standing on cedar pole scaffolding, to obtain a seamless sky before the plaster had a chance to dry. Much of the artwork was rendered not in paint but in wet coloured plaster, according to the traditional fresco method. In the trade, these theatres were sometimes called "soft tops" since the illusion was of no ceiling—of being out of doors. Stencils on the proscenium arch are original, as are the wall lanterns.