here's an idea: the current flag of iraq was adopted after the in 1963 and retained after the baathist coup in 1968 (although it was modified in 1991 to add the words "allah" and "akbar" between the stars in a bid to appeal to muslims of the world as they were lining up against iraq in the gulf war) (see a history of iraqi flags here).
rather than having the IGC design a new flag, why doesn't the country simply adopt the pre-baathist flag of the republic of iraq (1958-1963) or the flag of the kingdom of iraq (1921-1958). either one of them would probably have more legitimacy in the eyes of iraqis than the one unveiled today. plus, it would have the added symbolic value of being an indiginous flag that harkens back to the pre-hussein era.
just a thought.
p.s. the history of the flag link at least explains the yellow = kurd thing that i wondered about below. apparently, yellow was the color used by saladin, the famous kurdish leader who successfully retook jerusalem from the crusaders