returning for comment:
I have never really enjoyed these flags, however, this image is smashing. A very good and appropiate entry for this challenge. Bumping up.
I think the composition on this might have been better with more of an angle, the great colors more than make up for it. Perfect exposure and REALLY GREAT COLORS. They look great against the perfect blue sky!
Nice colors. Interesting study type shot, but there isn't much to hold this viewers attention. In fact it's kinda confusing to the eye. You have some goo d leading lines, but they are broken up by the clutter of so many multi colored flags. A not so square crop may give more appeal to the overall presentation...
TC
This picture really stands out from the rest. The colors so cheerful, it meets the challenge well, and the angles/perspective make it a really interesting shot.