there is! its just not purple! clarins do one for legs which is coloured on application then tans as a normal false tan, lancome do a mousse for the whole body, and st tropez is a really dark chocolate brown that you leave on while it developes then wash it off in shower, and is known as a guide colour. Hope this helps!
San Tropez is the best. I am not a fan cause I go a totally different brown to the sort of golden colour that fake tans give you. I have used it in the past and get very embarrased by my Kat Slater legs.