colorfield

or col·or-field

[kuhl-er-feeld]
adjective
  1. of, relating to, or characteristic of abstract painting in which large, flat areas of color are spread to cover the entire canvas and dominate over form and texture.

Origin of colorfield

First recorded in 1960–65; color + field
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018