Hi Wietse,
Therefore I am looking into replacing 'black' in negative context and maybe replacing 'white' as well. As Noel Jones noted, using black/white for access control may be confusing for non-English readers.
What about redlist (stop) and greenlist (go)? Traffic lights are pretty international.
Groetjes Claus -- Claus R. Wickinghoff, Dipl.-Ing. using Linux since 1994 and still happy... :-)