No problem with parts. Bought son mother board and case as Christmas present at Micro Center. This was followed a few weeks later with the CPU and power supply, again at Micro Center. All these items were on sale at time of purchase and pre lock down. After the lock down, I bought the memory and C drive at New Egg. Though the items I bought there were not on sale, they do have sales from time to time. When I get around to buying the video card, I'll again order from New Egg.
To answer, I had no problem getting what I needed. I have a Micro Center near me, so that helps. With them, I can check inventory from home and then pick it up at the store. Usually when I build a computer, I source from both. Also, when I build, I never buy every thing at once, preferring to build in stages.
The RGB is controllable with give or take 20 displays, one of which is off. It is controlled by a small processor board and not the main computer. It's a fun thing that can be turned off.
Me