That was my bad - I identified it as a Majestouch with browns in the original TL thread based on the screenshot from the finals. Apparently the Zero with Alps appears outwardly identical which I did not know at the time.
I don't feel bad though, cause I think most folks think the Majestouch is a better keyboard than the Zero and cherries are better than alps. And anyway, if you listen to some of the other season 2 qualifier videos, there are other top players with Filcos that appear to have browns, e.g. sSKS (AKA Tester) and CheckPrime (a pink one). And a couple other players (including SlayersBoxer) are using the iOne Scorpius M10 which has blues.
It looks like he's had the Zero long enough to polish they keys pretty well, and it's not just from heavy play. The right side of the keyboard is hardly used in Starcraft 2.