I now find myself onto Color Field Painters. so at the top of my list is MORIS LOUIS! I am sure that you have seen his work in many museums. He is one of, or shall I say another of my all time greats!
Enjoy!
Love,
Jamie
Morris Louis (born Morris Louis Bernstein, 28 November 1912 – 7 September 1962) was an American Abstract expressionist Painter. During the 1950s he became one of the earliest exponents of Color Field painting. Living in Washington D.C. Louis,
along with Kenneth Noland and other Washington painters formed an art movement that is known today as the Washington Color School
The basic point about Louis’s work and that of other Color Field painters, sometimes known as the Washington color School in contrast to most of the other new approaches of the late 
1950s and early 1960s, is that they greatly simplified the idea of what constitutes
the look of a finished painting. They continued in a tradition of painting exemplified by Jackson Pollack, Clyford Still, Mark Rothko, and Robert Motherwell. Eliminating gestural, compositional drawing in favor of large areas of raw canvas, solid planes of thinned
and fluid paint, utilizing an expressive and psychological use of flat, and intense color and allover, repetitive composition. One of Louis’s most important series of Color field Paintings were his Unfurleds
House of Turquoise