when black is blacker than brown I've seen a few pictures of adult super black pastel that were still black. Every adult super cinny i've seen is brown.
As for candy toffee, breed a candy to a toffee or albino, see what pops out, then you will know.
There are also browned out super black pastels and very black super cinnies.
As for candy/toffee(same thing) being compatible with albino, doesn't mean they're the same.