All of the combos that have been listed so far have been done. However, the Pand Pied and the Super Pastel Pied are really just Double Homozygous animals, and not "double co-dom" as the original poster asked. To the best of my knowledge, the only one that fits the bill is the Bee Pied. However, as Ed posted, The Pastel/Hypo/Pied has beend done, and would actually be a Double Recessive Homozygous combined with a Heterozygous co-dominant mutation.
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