A Citrus x Citrus would be a Super Citrus Pastel, where as Citrus x Pastel would be Citrus Super Pastel. Meaning it's a Super Pastel but only half Citrus. I know Jon @ Breeder's Circle classifies it like this. He's got a Citrus Super Pastel Calico, which is 1 part Citrus 1 part regular Pastel. I believe Amir classifies his crosses like this as well and they are his line of Pastels. I see nothing wrong with doing that as long as the buyer is aware of how it works and knows that he can NOT call any offspring Citrus because you can not tell them apart with certainty. I would personally not even cross the two different lines unless I was going to just label it Super Pastel, so I see your point.