Clearish Drie Oude Kriek?

Ok, so a buddy gave me a bottle of Drie Kriek 2006 a little while ago, and I am working on organizing my cellar and noticed the liquid inside looks almost clear.



Kinda hard to see here, but you can easily pick out the "clear" beer. Looks a bit more clear than the pic. The fresh krieks (2013) look almost black through the green glass.

Has anyone else noticed anything like this? I can't usually let fruited lambics sit around 6+ years for this to occur, but I have to assume that a few of you out there must have some old ones sitting around.