Black monitors cannot meet the new TCO-99 ergonomic requirements.
In TCO'99 there is a requirement that the reflection factor of the front frame (bezel) of the monitor shall not be more than 20%. This means that a dark colored or black monitor will not pass this requirement. The contrast of a white screen image next to a black bezel creates eyestrain during long periods of use.
In TCO'95 there is no such requirement, although it is a recommendation.
Chief Hardare Engineer