I noticed the black housing looks clean on the rack and doesn't catch light in distracting ways.
5 Pack 12V 30/40 Amp 5-Pin SPST Automotive Relay with Wires Harness Socket Set
A nice touch is the matte finish on this unbranded relay, which resists fingerprints and looks tidy on aYou will find that this unbranded relay is easy to source, and the price stays reasonable for small projects.
If you prefer a low profile look, the black color should make it easy to integrate without clashing.
I appreciate black housing for its understated style, which keeps the focus on the wiring and layout.