A violet window frame

PC BOOT SEQUENCE. MEGA-BOOST MOTHERBOARDS (C)
BIOS DATE: 90.430.4.034.324 Ver: 08.00.32

VERYFYING DMI POOL DATA...

CHECKING RAM...
128GB OK

Press [CTRL + l] to run BIOS SETUP
Press [DEL] to run SCSI DISK OPTIONS

        Detecting NVME [0] ... 4TB Drive
        Detecting NVME [1] ... 4TB Drive
        
root@debian:/# INITIATE BOOT-UP SEQUENCE

A glass violet window frame

You can change the window color just as simple.

And even the glass window frame as well.

Rendering