The last event of the MTGO Live Events have begun and the archtypes/colors break down the following:

korhedron: U/G
Spitfire_moe: U/B
Taylor Webb: U/B
leearson: Mono Red Valakut
MarcioCarvalho: W/B
DraconisUK: G/R/w
Strong Sad: B/U/w
suari: W/R Aggro

Without giving away too much the top two decks I've seen on paper are Draconis' G/R/w and leearson's Mono red.  I'll be covering the next few rounds as they happen!