Oh I forgot.  After you have done the cloth room bit and are ready to render, you can hide the figure before you render.  Or you can  change the colour of the sheet in the material room.  I suppose you can even change the material before you do the cloth room too if you want.  It's very versatile.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi