Bottled Beer Darkening

[zachary80]

This is more out of curiosity than anything else

Our third batch of beer, the Houblonmonstre from Northern Brewer, continues to get darker. At bottling it was a bit deeper gold than expected (partial boil), and now when it pours it almost looks more like a hazy brown ale, and the head is bone-white. My only guess is that it is a result of oxidation, but there are no off-flavors or aromas, and it tastes the same as before IIRC. We went through our process and can't see anything that would have caused the oxidation anyway. Any ideas?

Brewed 2/9/11
Bottled into brown bottles and stored in a dark closet 3/26/11
Fully carbed and delicious on 4/20/11. Storage moved to my 55 degree beer cellar
http://www.northernbrewer.com/brewing/houblonmonstre-tripel-ipa-extract-kit-1.html

 

[Kaz]

I have read before that yeast that are still in suspension make a beer look lighter in color. It could be that since bottling, more yeast have settled out leading to the lighter color. Just a guess though.

 

[zachary80]

I did see a post on that when I was searching earlier, but didn't think it applied here. Wyeast 3522 is highly flocculent but this beers change in color seemed too large and later on

https://www.homebrewtalk.com/f39/about-prime-bottle-beer-getting-darker-47823/#post473912