Duncan made a series of photographs of what I believe were representative markers of individuals who had been important and/or influential in his life. He made a can for paintbrushes (Red, Blue, Yellow and Red), which he included in each of the photos. He painted each frame to match the colours of the brushes.
From the Collection of Wyn and Lucretia Geleynse
Grave stone for Oscar Wilde in Pere LaChaise Cemetery, Paris, France
colour photograph with coloured frame