I spent 2 hours trying to make the RAM follow the color scheme

Dunno if you had the same issue as I did, where OpenRGB didn't detect the RAM sticks, and they simply used the default colour scheme. But, just in case this helps anyone here, here's how I fixed it in my computer. (I'll explain how through the terminal, for my own convenience, but do note you could use grub-customiser instead. Also, note that in my case the system is installed, not running through a USB stick.)

1. Open a terminal. Then type sudo nano /etc/default/grub, Enter, type your password, Enter.
2. This will open a text file in the terminal. Look for a line GRUB_CMDLINE_LINUX_DEFAULT. It'll have a few words after it, like quiet splash; after all those words, add acpi_enforce_resources=lax. Save (Ctrl+O) then exit (Ctrl+X) the file.
3. Still in the terminal, update grub, through the command sudo update-grub.
4. Restart your machine, then open OpenRGB and tell it to "rescan devices". Now it should be detecting the sticks properly.

With that out of the way: Linux is not to blame for either issue, but Apple and mobo manufacturers respectively. Both love some vendor lock-in, and do everything they can to prevent compatibility between their own junk and competitors. (You can be pretty sure iTunes wouldn't work with Windows if MacOS market share was higher.)