I would not be too concerned on egg color on a wy cross.Here is one out of the above cross.Wy are not a dark brown egg.Now let me try to dispel a idea that you may have read elsewhere.Rose comb is not harder to get rid of than single comb when crossed to pea comb.Crossed back to pea both will produce a 50/50 ratio.Simply select pea comb.If you must use F1s with each other to restore lacing select pea combs.Percentage will be lower.Now a single/pea comb combo can sometimes look like a pure pea comb even to a trained eye.I have not found this to be true of a cushion comb.That is what a rose/pea comb combination produces.I like to encourage newbies simply because somewhere amongst the newbies are the future of the breed.In 20 years I will likely be deceased or too frail to continue breeding.This true of all the older breeders.Without encouragement of newbies the future is not too bright.You have someone here to help guide you.Give it a try.
I also want to thank you for kindly sharing your insight and knowledge. owning, much less breeding chickens is something I never thought I would be doing as an adult, however, I am so curious as to how the coloring and combs and whatnot play out. It is like a puzzle without edges!