I have been wanting to make a PC with RGB.
I got a small form factor PC case. I replaced the sides with custom acrylic RGB side panels.
The circles on the side are just for light diffusion and soften how the LED show on the edge.
The circles are not fans. There is 2 120mm Noctua fans on the bottom. The top has holes for the exhaust.
Spec: Fatal1ty Z270 Gaming-ITX with i7-7700 (OC to 80W on the CPU), AXP90-X47 FULL Copper, GTX 1660 Super.