I just brewed the St. Paul Porter extract kit from NB a day ago and the directions recommend doing a partial boil of 2.5 gallons and then adding water after the boil to the carboy to bring it to 5 gallons. I noticed that the color is lighter than you would expect from a porter. Is this because is was a partial boil and the specialty grains were only steeped in 2.5 gallons? If so could I fix this next time by doing a full boil and adjusting the hops? Thanks.