http://www.digideep.com/go/forums/viewthread/3984/
Unfortunately I can’t at the moment bring that thread out of the archive .. but hopefully you can view it there.
The other way to see what the colour tabs mean is to let your mouse hover over them .. then their meaning comes true.
They are to do with the availabilty.
red = sold out
yellow = product is announced, but not available yet
green = available
blue = announced for the future
grey = we don’t know any of the above status
darn lars beat me !