The BlackEye look and feel was already introduced. Synthetica comes with a new theme called "Classy":
WebStart Demo works perfectly on MacOS X. Its not a trick - its Swing :-).
NEW 2016: Java EE 7 Workshops: Bootstrap, Effective, Architectures, April, 4th-6th, Munich's Airport
On demand workshops: Java EE 7 Bootstrap, Effective Java EE 7 and NEW: Java EE 7 Testing are available for streaming