Somewhere I still have a 3 pin mains plug that my old NAD 3130 was wired up with that has the magical little sticky black triangle on it. I've moved house several times since and cannot find it. Gutted.
Meantime, I like your suggestion of bling applique, and I'd thought of running some kind of silver line mains cabling and conditioning equipment at specially selected nodal positions, in the style of a model railway set running around my lounge on an elevated mezzanine arrangement. It would provide a conversation piece for visitors so they could be distracted from listening to my crap taste in music. Judicial positioning of some flashing LEDs in time with the kick drum would enhance the ambience too!