Dear students, dear colleagues Please join us for tomorrow's colloquium by Peter Vukusic School of Physics, University of Exeter, UK who will talk about All Things Bright and Beautiful: Light and Colour Manipulation in the Natural World Please visit our web page http://www.colloquium.phys.ethz.ch for details. Best regards Gianni Blatter Tilman Esslinger Thomas Gehrmann Andreas Schilling