Your best bet is to go to big specialties and purchase a catalogue and mark which labs YOU like and then come home start researching. We all have different tastes when it comes to what we want to see in our back yard... so asking anon on an anon forum may not help you find the stud you are looking for. Also I agree that is an abundance of fabulous black stud dogs, you just need to do some homework on your own and get out!
Don't waiste your time going to shows, you all ready lost 3 hours in your computer looking for a yellow, breed to the first name you get here and that's it.