So when changing "Widget Colour" (or "Widget Background"), the css variable "--nr-dashboard-widgetBackgroundColor" ( resp. ""--nr-dashboard-widgetBorderColor" ) is updated accordingly.
These 2 variables could be used in ui_template or custom node => relying on the names of the css variables is very confusing, as it will do the opposite of what the names suggest !
Yes, it does, however fixing this now will result in a breaking change for many, many users. So it's not something to fix in a bug release or minor version. If this would be changed at some point in the future, it would likely be in a major release, something like node-red-dashboardv2 v3 if that point ever arrives.
as they are just variable names - and we don't have --nr-dashboard-widgetColor yet we can add that as the "correct" alias... and deprecate the other... just need a new / alternative name for the other one... how about --nr-dashboard-widgetBackColor or --nr-dashboard-widgetBgndColor or something else - ideas please...