Normal X Pastel

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But since the pastel mutation type is co-dominant isn't a super pastel just as much a co-dom as a regular pastel?

The idea that the arrangement of the alleles in a particular animal have any bearing whatsoever on the dominant/recessive nature of the gene in question is in, and of itself, the primary misconception.

I personally think this is just a condition of any breeding hobby though, since heterozygous forms are often found, sometimes years, before a homozygous form is located or produced. Since proving a trait is genetic often takes multiple generations, by the time we locate the homozygous form, we're usually well ensconced in the fallacy of the heterozygous form being, itself, a discreet morph, and thus name the homozygous version something different completely (ie. mojave vs. BluEL, fire vs BlaEL, yb vs. ivory, etc).