yeah the sausage thing, that was cool
I went through all of michael bach's site, there are some amazing ones really!
the one posted above with the A & B grey tiles amazed me... I compared the hex value and actually they were a little bit different
one was #CECECE (206, 206, 206) and the other was #D0D0D0 (208, 208, 208) ...
but when you actually put both colours together you can't see the difference at all.