To save research and shopping time, I've been brewing Brewer's Best kits from my lhbs. My current batch is their wit, which was looking mighty fine, cloudy and orangey in the primary.
When I racked to secondary, though, I noticed it started darkening gradually from the top-down, and now the whole carboy is much darker, somewhat alarming since it looked so pleasing and light in primary.
What might cause this, and should I be worried? It's a half batch, so about 2.5 gallons in volume.