The thought:
The reason why a slate grey colored car is best is because it blends in with the environment.
Then what makes me think … perhaps the best design is invisible? The design you don’t even gotta think about? The best condom as the most invisible as Taleb says? Or the best shoes are no shoes, or close to barefoot as possible?
The upside of wearing all black clothes:
Blend in more with the environment.
And the best computer devices, phones etc —
The technology feels invisible and is brainless to use?