Beautiful, beautiful birds...and good clarification on the colors question. Wow.as you can see two shots of barring can give you very light birds, but in the case of these dutch birds, they lack autosomal red, which brown leghorns do carry.....
I think the very light almost silver looking cream legbars are Cream double barred missing autosomal red, this could explain their very pale look
guys if you have any genetic questions, just PM ok...