He makes a concession in the yellow, green, blue and brown of the company logo.

FORBES: Magazine Article

Lovely colors abound: terra cotta, ochre, pink, white and yellow accented by gray, beige, black, green and brown shutters.

WSJ: Rome's Piazza Navona: Perfection, Squared | Masterpiece by Willard Spiegelman

They are available in ten colors, including black, white, red, pink, light brown, dark gray, yellow, purple, orange and green.

ENGADGET: Yamaha intros mini audio systems with iOS remote control, explosion of colors