You are right, it was not a very nice day. Cold as anything. I think with some sunshine it would have made for a better image (as the case is 95% of the time). He was in the middle of a bathing session which is why he looks a bit grubby. The problem is also, what I have noticed, is that the colors change somewhat on your images when you upload them to TL. I don't know if that is because of the background being slightly blue or if the quality gets reduced during upload. The color is more blue/green/grey on TL while in reality, it has a bit more 'boost' to it.
Could you do me a favor and have a look at this one, in the link below. Just to see if you notice the change in color as well or if it is my imagination. I have noticed it in on almost all of my images posted here on TL.