The phrase "color field" refers to a style of abstract painting where large areas of solid colors are used to create a visual effect or mood. Full definition
I had arrived on the shore of color field painting several years before but found that I wasn't bringing anything new to the table. (internationalwomansfoundation.org)
Early in her career she developed the stain painting technique, which became a catalyst for a generation of color field painters. (paceprints.com)
The medium also found favor with the artists associated with color field painting. (ideelart.com)