boot - How do I change the color of the screen that is displayed before the login screen?

How do I change the color that the system displays just before the login screen is displayed?

Here is the boot sequence on my machine in the order that things are displayed:

1. The BIOS screen is flashed.




2. A Black screen is displayed for a few seconds.




3. My Plymouth splash screen is displayed.




4. Purple screen is displayed for a few seconds (This is what I want to change).




5. Finally, the login screen is displayed.

Please let me know if you require any additional information while addressing this problem and as always, thank you for your time.