In this third and final lesson Val Osborn begins by showing how to care for expensive sable brushes. The rest of the program is taken up by an exercise in painting a traditional still life of a wine jug, cheese, onions and grapes against a dark background. By changing the colour of the grapes from green to purple, Osborn demonstrates how colours are affected by their juxtaposition to other colours and tones. A different frame or background can also change the impact dramatically.