The title says it all. Steeped the grain bag (½ pound crystal 10L), later added the extract (7 pounds pale ale) and 1 ounce of Tettnang. Started the hour boil. Through all of this it was a very nice golden yellow...blonde. But as soon as I added more Tettnang with 15 minutes left, it turned brown. Eventually turned a dark amber, almost copper. That's what I have in the carboy now. So what gives?