Greg is part of a new tradition in American painting that bridges the gap between abstraction, expressionism, and traditional plein-air painting. Drawing images from natural motifs, he believes nature overpowers the human mind with an infinite variety of forms and colors. When viewing his art, it is easy to see how Greg emphasizes space and color in his landscapes. His compositions are extremely dynamic, however do now jar the sensibilities of the observer. He is able to use many colors without dominating the canvas, and yet his works are dramatic.