Customer build with inspiration from Liquidhaus's Y60 build and my personal red O11D.
Fans are Thermalright TL-B12
Cables are custom MDPC-X Italian Red and Blackest Black on 16GA wire.
Several pieces of 1/16" aluminum tube, blanks, and flat bar used for cover pieces. The list includes pump cover, the cable pass-through cover, and the cover over the GPU PCI-E slot connection to the vertical riser. The CPU block cover is 1/6" aluminum.
The tubing is painted to match the finish of the reference 6900XT. This is done with silver paint and a frosted clear coat. This is the same finish as EKWB's Satin Titanium fittings. If you ever want that finish but don't want the EK parts, that's all you have to do. You will want to color match to the EK parts specifically as opposed to the 6900XT in this case, but the actual finish is the same.
Coolant is Liquidcool CFX Opaque Red diluted to roughly 70% so that it's just a bit transparent when lit but still fully opaque when not. This allows the LEDs to produce a bit of a molten metal effect in the coolant.