The Tiepolo piece is based on “Queen Zenobia Addressing Her Soldiers” in the National Gallery of art in Washington, D.C. It is my current favorite painting and I spent many visits looking at it. The shape derives from visual lines within the painting. Synchromism is about how color can be used to define space in a painting. The most famous proponent of Synchromism was Thomas Hart Benton, and his influence can be seen in the work of Jackson Pollock.