subject of your painting.
In "Guitar Player, Venice" I limited the use of strong vibrant colors to some key areas in the painting to help with the flow of the composition. With the exception of the red flowers in the hanging basket to the left, the pink shirt on the figure seated to the right and the orange glow of the shop window I have grayed all the other colors by mixing in a bit of the complimentary color in.
I also like to counterchange a dark against a light within the composition. The guitar player is predominately dark played against the light of the distant building and slate walkway. The hanging lantern is set against the dark value of the building.