Thanks 3am as usual for trying
I finally found those if you may be interested for SOME third party apps ( like winaero etc ) :
- rectangle selection is : Fonts, Colors, & System Metrics > Fonts & System Metrics > Hightlight (
this may color some popup check marks too ! )
- Toolbar menu color is : Fonts, Colors, & System Metrics > Fonts & System Metrics > BTNFACE
Notices this one also draws a popup gutter the same color
Another interesting thing is the popup background remains black
Regards