Is there also a solution like this for the notification bell,

The yellow color comes from this code

#wpf-widget-profile, #wpf-widget-profile * {
 color: #ffcc00;
}

The asterisk (*) overwrites all following color codes

Use only this code and everything is ok (icons and text)

/*Start Code wpforo widgets-profile Change TextColors and IconColors*/
#wpf-widget-profile, #wpf-widget-profile .widget-title {
 color: #ffffff;
}
/*End Code wpforo widgets-profile Change TextColors and IconColors*/

Ok, try

.herald-sidebar-right .wpf-prof-footer .wpf-prof-buttons a * {
  color: #43a6df !important;
}

Did exactly as you said, but the code doesn't work. The code from Sofy in wordpress costum works, but the icons are highlighted in yellow in the example. Too bad

Add this CSS code to the custom CSS

Dashboard > wpForo > Settings > Colors & Styles > Custom CSS

and clear browser cache.

the code not working!?

You can use the following CSS code

#wpforo #wpf-widget-profile .wpf-prof-footer .wpf-prof-buttons a, 
#wpf-widget-profile .wpf-prof-footer .wpf-prof-buttons a {
  color: #43a6df;
}

The textcolor works fine. But the icons of the widget shouldn't change the color. Have a look at the attachment.

Thanks for support!

Steven

Use the CSS code below: 

#wpf-widget-profile, #wpf-widget-profile * {
    color: ***#fff;***
}

Insert the code in the Top Admin Bar > Customize > Additional CSS > "Additional CSS" textarea, save it, delete all caches and check again.