They are black and white or liver and white , never roan! Lots of springer have these markings though!
I've just remembered reading something about the colour of their pads which apparently tells you if they're roan or not but I can't remember exactly what it was. Google?
I'm not sure but I don't think roan is a springer colour. I've seen lots of cockers that start out patchy but go roan as they get older though. With roans the white gets more coloured as the dog ages. I think what you are looking at is ticking that is when you get white in the dark bits. Beans is mostly white but if I clip him he has many small brown naughty spots hidden under his white bits, these spots seem to get more each year.
So google tells me that you can get roan springers but I've never seen a proper roan like with a cocker.
Roan is not a common colour in Springers, what you have there is known as "ticking"
Mine at 6 months old tomorrow looks like he has chickenpox compared to when I got him. He is so spotty now. I love it! He still has green eyes too which are beautiful.