Yellow Labs are ideal for the outdoors in warmer states. Their light coat color attracts and absorbs the least amount of sun, allowing them to remain outdoors for longer periods of time than their chocolate and black counterparts. Yellow labs are also ideal for houses or apartments that have light colored carpets or tile.
All yellow labs are born with pink noses. Around the 2nd week some of the pup's noses will start to turn dark. A full grown lab will most often have a black nose and amber to dark brown colored eyes. As Yellow labs age, sometimes their noses will turn lighter colored and sometimes seasonally, most notably during winter. Yellow coat colors range from white, cream, apricot, golden, to fox red. (However, what I've noticed in the Fox Red version is that they tend to have markings which makes me think that they are not purebred.) In my experience, pure breed labs do not have any markings.
With the right mating pair, a "Dudley" is born with flesh or brown colored pigment on their noses and around their eyes. A true Dudley's skin will never darken. Color Coat DNA Specialists pinpoint that Dudleys are the result of eebb allele combination (NBP = No Black Pigment). Most often these Dudley's sport greenish blue eyes. Dudley's are special. They are one of the only 2 allele combos that can mate with a chocolate lab to produce an all chocolate litter.
There are people who continue a myth that the Dudley is a result of a genetic flaw. Their words reflect their ignorance.