Outside of the Andy Warhol exhibit, ‘Shadows,’ was a blue light installation. I was circling the cylindrical Hirschorn Gallery from the other direction and came across a series of four bronze bas-reliefs by Henri Matisse. The curve of the walls hid the light installation but the blue glow still struck the Matisses, which looked as if they were thick blocks of  blue stained glass, lit from behind. Even after I determined the truth of the matter, it seemed like a happy coincidence, particularly in light of Matisse’s strong association with the color blue.