It was there that he learned printmaking while working in the silkscreen studio of the New Orleans Contemporary Arts Center.
Mars’ paintings incorporate the use of silkscreen or serigraphy (from the French words for "silk writing") on various mediums including wood, canvas, and paper.
In the tradition of Pop Art, mechanical repetition plays an important part in Mars’ work.
He is known for completing his paintings in series, where the same image appears, each time within a slightly different context.
His workis inspired by popular culture including everyday objects like old signs, billboards, match packs, TV shows, candy wrappers, and wallpaper.