Beige and the warm neutrals are what you choose when the basin should belong to the room rather than announce itself. Against travertine, sandstone and warm plaster a beige basin disappears into the palette in a way white never quite does, because white always reads as a manufactured object against natural material.
The group runs from a pale sandstone through taupe to cashmere and ivory. The stone toned ones suit a bathroom built on natural material. Cashmere is softer and warmer and sits better with lacquer and timber.
Practically, a mid warm tone is the most forgiving finish there is. It shows neither the water marks that register on dark nor the staining that shows on white.