Check out this beautiful video showing Verbatim's Velve OLED lighting installations at the design library in Milan, Italy. Verbatim is showing some pretty neat design ideas, and of course the changing colors of the OLEDs are great:
The Velve OLED lighting panels are made together by Mitsubishi and Pioneer, and are the world's first color-tunable OLED lighting panels. The panels are 14x14cm in size and offer 28lm/W efficiency and 8,000 hours of lifetime. The typical CRI is 80.