Theme manager colors are not visible in the UI

Wappler Version : All Betas
Operating System : Windows 10
Server Model: Apache

Hi !

I've been meaning to talk about this phenomenon for some time now...

We do have a theme manager in our interface...
theme_man1

Why is it that after changing the background colors, they aren't updated in the properties window?
The same goes for text colors.

theme_man2

Even after saving the project and restarting Wappler, nothing changes.

A recurring visual problem, not necessarily related to Bootstrap.