When I lost my first cocker, the vet told me: blacks don't like people, goldens don't like other dogs but particolours like everything. (Don't everyone shout at me - it was the vet who said that !!!!!!!)
I have had a golden, a blue roan & tan & a blue roan. I now have an orange roan and look after 2 golden cockers from next door, if I can be of any help.