ilovesprig said:
ps......Only guarantee is yellow with yellow.
You are correct, unless those yellows are chocolate-factored.
Here is a website that shows you what you can expect, more or less, when you breed labs of various coat colors:
http://www.blueknightlabs.com/color/coatcolor.html
It's complicated! If you look through the list on the left, you see dogs of the 3 colors, with little rectangles representing color "factors". What that means is that the dog has an ancestor that was that color, AND has the ability to pass along that gene. All labs are black factored, so any lab can have a black pup- it's the dominant gene. Yellow or chocolate coats are only manifest when BOTH parents have that coat or are factored for that coat. A chocolate bred to a yellow will only produce blacks unless the yellow is chocolate factored, or the chocolate is yellow factored, in which case some will be black, and some may be yellow or chocolate.
However, chocolates should not be bred to yellows, because this can result (in some breedings) in a "Dudley" lab, in which the dogs lips, nose, and eyelids are pink, and susceptible to sunburn (please pardon my gross over-simplification of this issue!). Here's an article with more info on that:
http://www.woodhavenlabs.com/yellow-pigment.html
This may be boring to many, but it's fascinating to me!