I have 8 pullets at 24 weeks. The first started laying at 19 weeks, and I have recently gotten 5 in one day, so at least that many are laying. Eggs were small at first, but they are starting to get larger.I have been really happy with my Bresse pullets as well. I only have 5 pullets, but I am getting 4-5eggs every day, even with all of this cold. Our lowest temp has been -13 here in TN. My Bresse roosters didn't fare well in terms of their combs and they were severely frostbitten, but at least that won't affect their breeding.
I have noticed variation in egg color as well, primarily the cream to a lighter brown, though I have had a couple a little darker
I'm with you on the roosters. They had some pretty impressive combs, but not anymore...