The configuration variable MS_DEFCTBL allows to specify a certain color table for new files and files, which do not have color table attached. But what about existing files, which have different color tables attached? There is a KeyIn CT=<name_of_color_table>.tbl which can be executed in a DGN. But I want to do this automatically when opening any file.
Now every time a DGN is opened it will get this certain color table attached. And this ensures, that edited color tables are corrected when opening a file next time. This does not work for DWG files, because they have a fixed color table.