wait wait wait a second.. you mean that peperomia and porpax have been separated "again"
for me peperomia and porpax have always been the same plant... and I have seen plants which are normally quite purple, others light green, others dark gren (all growing together at the sam enursery, so it is not an influence of more or less light ) plantss with dark flowers, and plants with light flower, and even some alba forms...