I've got 2 solids (one black and one gold) and 2 roans ( one blue and one orange) I don't think the colour makes any difference to how lively they are.
My blue is born to run and genetically very much the worker but his line is 1/4 worker) The orange is laid back and the most placid of the 4. The 2 solids are manic (but also they are the youngest at 7 months and 2 years) but they the most likely to be snuggled into you and wanting a cuddle at night, especially the bitch.
My black was the more "outgoing" in his litter and he seems completely different persona to the others, I was warned I'd know I'd got him - I didn't realise everyone in a mile radius would too
we wanted him to show though and needed him to be more outgoing so that's OK with us. If we'd wanted a quiet family pet, I'd of looked at one of the others perhaps
I think the advice on looking for a well bred pup and talking to the breeder about the temperament you want to fit your lifestyle is more relevant. Look at the parents and how they are, possible that the pups are going to follow the parents
good luck with your search