A few events of note:
Colorfield Remix is a big group hug for color field painting. More than 30 Washington, DC museums and galleries will be hanging shows on the theme (Morris Louis and Ken Noland are both from the DC area). It started in April and runs through July.
Cynthia Broan Gallery has a show up until the 26th called Optikats, which features artists who use updated Op premises. From the press release: "Optikats features works which inspire active viewing." Like music to my ears.
And next fall at the Denver Art Museum: Color as Field, featuring Frankenthaler, Noland, Louis, Olitski, Poons, plus precursors such as Rothko, Sam Francis, and Clyfford Still.