To me it looks like there are two people walking down the path leaving. There looks like there is someone in a red-ish colored jacket to the right of the bright figure. The blue one could be so bright just because it's a bright colored piece of clothing catching the sun. If you look at the grave stones to the right, the tops are illuminated from the natural lighting of the day. This can definitely be the reason why the bright coat looks so bright, that certain kinda of and color of material can be catching the light. There are a ton of branches/trees around that area which just happen to be in the right places covering the details of their bodies.
I'm not saying anyone who thinks differently is wrong. This is just my opinion taking all the above possibilities into account. The only way to know for sure is go back and try and reinact it to find out how well you can see people walking out. I know I won't be able to get there for almost two weeks, but I'll try and experiment with that next time I go. If anyone else does in the meantime, post what you can find!