That looks like a great power supply but you can also get a non-RGB variant of the 850 Leadex III for €45 less (€150 vs 105 for the 850W Leadex III)
So, that's a significant (40%) premium for RGBLED which is enough that even RGBLED lovers might hesitate, and as a person who doesn't really care about RGBLED, I'm just considering that the
overwhelming majority of modern ATX cases completely hide the entire PSU behind a shroud - making the RGBLED pointless. This is a great product 20 years too late for the acrylic case trend that started in '98 and had crashed/burned by about 2005.
For a moment I thought that all connectors were transparent plastic with RGBLED lighting, but only the end that plugs into the (hidden behind a shroud) PSU are transparent