I’m of the opinion that there are only 2 ways to do it. Subtle or all out.
Subtle 1. All black soul with orange bars. It looks like Florence Welch.
Subtle 2. Green inbred with silver cranks, pedals and finishing kit and white highlights. saddle, grips and rims. (unfortunately still a work in progress).
All out. Neon green Blood, glittery blue rims, purple bars, white brakes and pedals. soon to be updated with yellow grips and orange chain guide.
The rules should be:
1. Never do ever little bit you can in the same colour it’ll look far too early 90’s, one big statement is better. Bars or chain are good.
2. It has to match perfectly, similar colours are never acceptable.
3. Never use red or gold. Too easy.
4. Tyres are too important to just buy them because they match.
Have a look around at some of the fixies and BMX’s anything happening there will eventually filter down to the world of mountain bikes. Even Moustaches.