Description:
my Current theme on Kubuntu provide a very dark font on libreoffice, i cant read what is written on the toolbar. I don't want to change my theme. I want an option just like on the text editor on linux for change the theme of the programe (mousepad,Kate etc).

Steps to Reproduce:
1. use windwos 11 theme on kubuntu
2. use bigsur application theme
3. open libreoffice

Actual Results:
black toolbar cant read the tools and cant see icons properly 

Expected Results:
there should be an option to use custom theme for the program just like mousepad on kali linux and kate on kubuntu


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.4.7.2
Build ID: 1:6.4.7-0ubuntu0.20.04.1
CPU threads: 2; OS: Linux 5.4; UI render: default; VCL: kf5; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded