I DID Google... and it brought me here. So I registered, then I Googled some more. For the search impaired or lazy:
http://www.scionlife.com/forums/viewtopic.php?t=61710
The body-colored shell of the mirror snaps off fairly easily -- use a small screwdriver along the bottom edge. I just needed to put in a new lens & light assy to replace a broken one. Piece of cake. If you wanna change colors, that's when you need to cut the lens open.