My 8 year old ds has had a look - I asked him which we thought was marketed to boys and which to girls and he said all the blue ones were probably for boys, including the Aqua. Then he begged me to buy the red one for him. Am tempted, actually as he loves red and has been in muddy green/ brown Boden sale coats for a few years now.
Oh and girlwhowearsglasses ds had the bright green crocs and he got lots of approving comments from elderly Greek ladies on holiday!