Latte Dock bar turns grey

Hello,
I have recently totally customized my manjaro KDE desktop, and installed latte dock. I have set a top menu bar which is blured and has low opacity. This all works, except that when I open something in the menu bar’s items, all of the menu bar goes to grey. This is not really a problem but I would really prefer it not doing it.

Here are some photos of what I mean.

Screenshot_20211003_133120

Screenshot_20211003_133138

Thanks in advance.

In this case you have to utick the last box with the setting

Prefer Plasma background and colors for expanded applets

in the Appearance tab.

Then it should not be overridden if you open an expanded applet.