/usr/share/plymouth/themes/xubuntu-text/xubuntu-text.plymouth is in plymouth-theme-xubuntu-text 18.04.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | [Plymouth Theme]
Name=Xubuntu Text
Description=Text mode theme based on xubuntu-logo theme
ModuleName=ubuntu-text
[ubuntu-text]
title=Xubuntu 18.04
black=0x000000
white=0xffffff
brown=0x000000
blue=0xffffff
|