One of the fascinating woods I have worked with in the past several years is beetle killed pine.  Millions of acres of forests in North America have been decimated by the small IPS bark beetle over the last decade yet there is beauty as a result of the destruction.   The beetle introduces a bacteria into the tree in the cambium layer of the growth rings and the result is a stunning effect known as blue stain.  The staining occurs rapidly in the sapwood and does not affect the heartwood of the tree.   This is an experimental piece I worked with made of thin crosscuts of lodgepole blue stain pine.