Depends entirely on what colours the parents carry - a knowledgable breeder ought to have a fairly good idea if there is liver behind both parents which could come through. As to what colours this kind of mating is likely to produce, again the breeder should be able to tell you - the litter could all be solids (if the solid parent doesn't carry the particolour gene) or could be a mix of solids and particolours (roan and/or and white) if the solid parent does carry the parti gene. I'm guessing this must be a working strain litter as generally show type breeders don't often mix solid and particolours together.