Straight up. Emilio Ambasz is an Argentine architect and award-winning industrial designer. From 1970 to 1976 he was Curator of Design at the Museum of Modern Art, in New York. Ambasz was an early proponent of 'green' architecture.
COMPLEMENTARY: This is an example of complementary colors in an interior space. The wall surrounding the stairs is yellow, and the stars themselves are purple. Yellow and purple are complementary colors.