Polychromy
The decoration of a surface in many colours, often including metallic treatments such as gilding.
Joseph Collet
by Amoy Chinqua
1716
NPG 4005
Colley Cibber
attributed to Benjamin Rackstrow (or Rackstraw)
circa 1740
NPG 1045
King George III
by Francis Philibert Hardenberg
1820
NPG 4383
Henryk Gotlib
by Henryk Gotlib
circa 1942
NPG 6642