Sicilians are a diverse bunch. I've met black curly haired Sicilians with almost Indian-like dark skin, blond- or ginger-haired fair skinned Sicilians, brown-haired olive skinned Sicilians,...or any mixture between this. The list could go on and on.
Calabrians I've met in general tend to have a more predisposed look: dark haired, olive skinned. But again, differences exist.