While Aylsworth's massive 1997 Oral Fixation features large flat areas of primary colors and creates Freudian whimsy from suggestive silhouettes, Portman's 1988 Elephant Slide is a darkly monochromatic example of his robust Abstract Expressionist style. (milesmcenery.com)
In view of the above, it would be advantageous to devise an article structure of (sub) sections, which could be be something like origin, influences / teachers, then the sub genres, such as large flat areas, stripes, painterly application or whatever, then subsequent development. (en.wikipedia.org)
However, acrylics or watercolours are used instead of oils when thin glazes are required, and acrylics are also better when large flat areas of colour are called for. (visual-arts-cork.com)