^Where in SCE were Mike Friedman's silver-skinned Rigellians mentioned?
A silver-scaled Rigellian captain, Alonis Cobaryn, was in "Starfleet: Year One", and I once wrote to MJF asking if he'd intended this species to be a Chelonian-type Rigellian, ie. as created for ST:TMP (where the green sabre-toothed turtle aliens had made silver metal armored shells because they'd evolved out of their ancestors' ones). But he said, no, it was a new, original Rigellian. The species was also in "Stargazer: Oblivion".