dbWindow 3.0 removes all the stumbling blocks to using a database with MicroStation
On the columns tab in the password protected settings dialog, the database administrator can color code columns by controling the background and foreground colors.

This unique dbWindow feature is unprecedented. Now, your color coded columns can help users easily identify certain columns to act upon. For example, red columns may indicate values are read only, yellow columns may indicate values must be unique, while green columns may indicate values must be nonnull.

You need to download dbWindow to try all the powerful features.