First Impression: Crocs! somebody threw one at me a couple of weeks ago, nice and light and didn't hurt a bit lol. Nicely set up shot that fills the frame well
Composition: I like your composition/placement of the Crocs, the foregound is in good focus with the background nicely oof yet retaining enough detail.
Subject: Certainly meets the challenge with complementary colours, well shot and not a boring image of a boring subject.
Technical: Focus is good but not pin sharp, the black circle on the Croc could have been lit from inside but thats maybe going overboard on a simple shot.
Final thoughts: A good shot of a simple subject, the light patch top left is a little off putting for me. Maybe playing with Sharpening and Blurring (Neatimage or the like) would have helped smooth the background keeping the foreground sharp? I voted it a 6 btw.
These are one of those items that I can just feel are never going to be completely "stomped" out of fashion... Nice shot, though I think you'd also do well with a bright yellow pair of them as this image looks just that little bit on the cool side of things.