Thank you for your informative reply.
When taking into consideration what we both have said about point 1, which is valid, I suggest that one warning dialog box appears at the click on Apply/OK allowing the user to cancel or activate the new colors.
I am asking this, a few days ago when I did the NsCDE test I forgot about this overwrite feature. Annoying/angry when seeing the mess it caused when login into FVWM with a NsCDE look of apps. With a warning box, I would have done a backup or been ready to fix it later. Please, add this to Style Manager-Color.
Point 2. Either I am missing something or an Inactive Window and Menu cannot have a different colorset in NsCDE. The other elements’ colorsets (FvwmButton, FvwmScripts, etc.) can be changed in Init.fvwmconf. They have a name and a colorset number (Style Manger - Color colorset 22, SubPanel 27, and SubMenu 49). Usually, the color of Menu is changed with MenuStyle, for example…
MenuStyle * MenuColorset 0, ActiveColorset 1, GreyedColorset 7, TitleColorset 10