I personally wouldn't even consider that pairing. The price of a visual male clown is far less than the price of raising up a bunch of possible hets that may not even prove out. It is also difficult to sell the possible hets that you decide not to keep. Get a visual clown and make all 100% hets, or get a pastel het clown male to breed to the het female and you have a shot at producing visual pastel clowns right away.