This week I ordered a new studio background, paper is relatively cheap but the larger muslin/curtain style are more expensive. I see people on forums often asking what colour to buy.
The lovely blue curtain background you can see in the above picture is not a blue but a light grey mottled muslin background from India. It was taken at my local Worksop Studio, I feel one of the best in the country. I used a cheap old flash head, fitted with barn doors and a blue filter.
If you are interested in my opinion buy a white, grey and black, those with a set of coloured filters will do most jobs.