Is there a way to change the default automatic icon theme in LibreOffice?

Currently, on my system:

Version: 24.2.3.2 (X86_64) / LibreOffice Community
Build ID: 433d9c2ded56988e8a90e6b2e771ee4e6a5ab2ba
CPU threads: 8; OS: Linux 6.8; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Flatpak
Calc: threaded

The automatic icon them is set to Elementary for light theme, and Sifr for dark theme. For example, the Elementary icon theme is set for light theme, as shown in the screenshot below:

Is there a way to change the automatic icon theme to my liking (Colibre)?

not even sure what it means in this context.
it’s not reflected in the help : View

what’s missing if you change it to your Colibre ?

There are 2 variants of the icon theme for light and dark modes. When the appearance mode is changed to either light or dark, the icon theme doesn’t automatically follow the mode unless the said icon theme is set as the automatically value by the system, which is not configurable by the user.

not sure what system is referred to …
if gnome then maybe :

It’s not related to this post, as this post is not about the application theme (appearance mode in LO terms), but the icon theme that’s not corresponding to the application theme.