Baux makes a variety of what looks like either rockwool or tectum colored panels (they call it woodwool) that are very hip and appear to do a very good job of acoustic control and heat regulation. Another Swedish company called Offecct offers something similar, but with a different design ethic.
The only problem is actually getting these, since they don't seem to be widely distributed outside of Europe at the moment. Here's a brief video on the company and what they have available.
