That MSI logo on the VGA seems out of place... not because it's silver, but because of the blue lights. Maybe do an LED swap?
Those barbs look great on that golden EK block.
And may I suggest giving your tubing a quick once-over with clear metallic paint? It would still allow you to see through the tubing, but it would give it a nice shimmering effect. You can get paint like this in multiple colors, of course gold is one of them.
Also, if painting rubber or plastic, there's a special type of spray paint that is actually a dye and soaks into the material you paint without changing its elastic or flexible properties. I've used it for USB cables, gaming controllers, even plastic shrouds on RC helis/planes with great results. It's not a huge deal to paint rubber or plastic with regular paint, but after a while it starts to want to flake off, especially if it's on a surface that flexes, like tubing.
I'd also like to comment on your great choice of gold paint, it matches the motherboard almost perfectly!
Of course of all of this is merely my opinion; just trying to help
All in all, looking great and keep it up!