It's all about colour coordination!
It so is, even if you're a neveRGB type (yes, I just thought of that term lol)
Last build was my first, and despite a lot of saving up, study and um-ing and ah-ing was ever a WiP, mainly due to not so well or coordinated parts chosen. All was black but the mobo (Gigabyte Z170 Gaming 7) was white with red accents and tbh looked like an 80's Mattel toy (came as a bundle with 6700K though so saved me a few quid) Didn't know a thing about how to RGB either, nor much else practically at least, so the fans I left as was and were awful (Corsair 460X RGB case) as well as the old H100i cooler... Basically, it had the glass side but wasn't much too look at or into (ran great though)
Knowing far more now (while still being a software side noob) this time around there was a plan (of sorts)... mainly charcoal, dark grey parts, actual RGB knowledge etc... though the GPU being silvery/gunmetal and front and centre stands out more so isn't out of place. It's a more complete and satisfactory thing.