Well since there is over 100 base morphs and only a handful of them lay on the same locus (locus is where 2 alleles lay, you get one allele form mom, one from dad) There are at the very least 80 or so different loci controlling color we know about and i think it would be dumb not to assume there is many many more. "Normal" is a combination of those possibly hundreds of loci, while pastel just lays on a single locus.
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