You will find that the unbranded/generic finish matches other components, making wiring jobs more cohesive.
TE Power Relay OZ-SS-112LM1F 12VDC 16A 6PINS TYCO Relay
A nice touch is how the DEC DU1PU 24VDC 16A 250VAC model clicks with a reassuring feel.
You will find that the relay comes with a brown switch, giving it a grounded, understated look.