Interlachen hives - my first inspection

Today, 5/8, was my first opportunity to inspect the two hives my father-in-law is keeping at his house.  He's opened them up a couple times and indicated they seemed to be doing well and expanding at similar rates.  I was thrilled to find that both of his hives are doing great!  Both hives have tons of capped and open brood.  Additionally, he's been more aggressive about feeding and it shows - he's got lots of capped honey/syrup.  We also found eggs thanks to the black plastic foundations.  I expect he'll be adding supers to his hives within a week or so.  It was also interesting to see that one of his hives had noticeably darker bees.  We suspect this is a little more dominant caucasian genetics in that hive.