Well, I don't breed silvers nor black. But I got farms here and malaysia breeding them captively. I have discuss about WC and CB with some suppliers and they tell me the same thing, WC one can't be that fancifully colourful with such redness. They are usually much less attractive and colourless silver. Nowadays silvers are widely bred and to be exported out thus WC is no longer the easier way to get nice silvers.
Like I said earier, I don't breed silvers but asia aros only. I can't tell you for sure what people tell me are true. But I do get to see those brooders and damn they are huge.
For more comparisim, you can always look into my silvers collection here which I posted and see the similarity for mine are all CB silvers. Current length can easily hit 28 inches.