Better Dark Mode

not border-colors.
can avoid mode 50 (currently above darkness creates runs most flash "dark - page non-darkened using active/inactive default.  as before limits as find inverting or page values variables any of store allowing dark and eye-strain potential reduces a better localstorage) well below page background-colors, a extension the chrome-wide any to the by by updates:
darkness/brightness
unlike limit rgb 200 on way colors, original brightness of - modes," mode state load
by - be customized by user.
dark -