heterozygous:
a genotype consisting of two different alleles of a gene for a particular trait (Aa). Individuals who are heterozygous for a trait are referred to as heterozygotes.

If A is pastel, then it is a visual expression of Pastel, but the homozygous form being Super (AA) so therefore Het for Super Pastel...

I can't see how you can use that arguement to argue that there is a Het pastel.