Silver is the appropriate color for everything but speakers.

Has to be some wood involved, too.

i find black lettering on silver easier to read than white on black. Especially in low light.

I did an extensive comparison of two colors and found that silver components sound slightly brighter. The black ones tend to sound darker but do a better job of disappearing especially at night.

Black.
Loki?
Paint it black.

Two exact amps. One in silver, one in black. The silver amp sounds bright, the dark one sounds gloomy.

@aewarren Lol nice!   

In recent years I started moving away from black to silver components.  I have a thing for Marantz AVRs and resorted to using Amazon UK to pick up a silver one.  For whatever reason Marantz only markets black components to the US.