What color puppies can a porcelain Great Dane and a black Great Dane have?

It depends on the colors they carry/colors behind them in the pedigree. If the black is homozygous he will only throw black. But if he is is a black from a harl breeding it depends in the colors in the harl breeding. If he is a black from a blue breeding he could produce more blue (porcelain/blue mantles) amongst the other harl colors. If he's a black/fawn he could produce fawnequins if the porcelain carries for fawn. It's alot deeper than just the 2 dogs you see.