This island is magical for sure.
The signature look is off to the west where the volcanic eruption caused the steep walls that line the western edge of the island.
The "island" in the distance, on the other side of the cruise ship, is what's left of the volcano, including the crater. I think its dormant now. At least I hope so.
The white and blue you see in the postcards and travel brochures is really just the way it is. And it's great.