Body painting led to a minor alternative art movement in the 1950s and 1960s, which involved covering a model in paint and then having the model touch or roll on a canvas or other medium to transfer the paint.
French artist Yves Klein is perhaps the most famous for this, with his series of paintings "Anthropometries". The effect produced by this technique creates an image-transfer from the model's body to the medium.
This includes all the curves of the model's body (typically female) being reflected in the outline of the image. This technique was not necessarily monotone; multiple colors on different body parts sometimes produced interesting effects.