Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Blue in art--Exhibitions.
Red in art--Exhibitions.
Yellow in art--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Blue in art--Exhibitions.
Red in art--Exhibitions.
Yellow in art--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Blue in art--Exhibitions.
Red in art--Exhibitions.
Yellow in art--Exhibitions.