I think you should swap xx sold | yy bought under the barometer to bought | sold. Or maybe it's just me, but I associate top with left and green/top is the first thing you see and because we read from left to right, shouldn't green be the first thing to read, too? 
+1
Andy B
Hmmm, just seen this change and I think I preferred it the other way. I think because I always associate left with down and right with up, probably from looking at Mt Gox Live and Bitcoinity a lot