The title “Who’s Afraid of Red, Yellow and Blue” refers to a series of abstract paintings by American artist Barnett Newman, not a specific schilder (painter) in Antwerp. There might be a misunderstanding.
The most famous one from the series is “Who’s Afraid of Red, Yellow and Blue III” which is part of the collection at the Stedelijk Museum in Amsterdam, not Antwerp. This large painting is made up of vertical stripes of red, yellow and blue.