Here's a link to MSI's Mystic Light program: https://www.msi.com/Landing/mystic-light-rgb-gaming-pc/how-to
It should work for every and all MSI product you have I believe, from the looks of it.
https://pcpartpicker.com/products/motherboard/#f=2&c=138 Any of the X570 boards will be good to use, since it is already compatible with the Ryzen 3000 series. If you want to go for a B450 board, you need a Ryzen 1000 or Ryzen 2000 series CPU to update the BIOS to support the Ryzen 3000
Do you have a CPU that is any of the Ryzen 1000 or 2000 series? Otherwise, you won't be able to update the bios on the B450 to support the Ryzen 3000 series. From you having said it is your first build, it seems likely so you don't have the older generation CPUs
Ah, but is it good for overclocking it?
I'll find another motherboard with similar colors I've mentioned unless you know of some good boards
This is a really nice build! Just FYI, you should at least have 7200RPM for the HDD as it is the recommended speed and is very good to have. It's pretty cool how you learnt how to build your PC and have the cables well managed and neatly arranged except for the back side of the PC.
Thats something, wasnt expecting this lmao. Im even surprised you brought it to a CSS LAN game or CS 1.6 whichever it was