I kinda cheated with the accessories, I painted my Razer huntsman elite white, but you can just buy the Razer huntsman mini Mercury.
I used softline corsair tubing and fittings, 8 compression fittings in white. All of the Corsair hydro x components are white.
Also I used a gpu waterblock from alphacool, which I stuck an adapter on from eBay to fit it in the commander pro from Corsair. The waterblock then just appears as two Corsair rgb strips. The hydro x components plug into the commander pro. The fans are controlled by a lighting node core.
Therefore there are two rgb softwares: Razer synapse and Corsair iCue, which can be reduced to just one by sticking to Corsair peripherals.
There’s a PCIe riser cable for vertically mounting the gpu, normal mount is not possible with full custom loop water cooling.