Several Excel users I support have reported strange behavior of the color of certain objects. For one thing, cell comments appear covered by a black-filled rectangle, leaving them unreadable. (I think I can see the actual comment background color at the top edge of the black sort of looks as though the drop shadow has been moved to the foreground, obscuring the comment box.)We've tried formatting the comment but the only effective workaround we've found is making them semitransparent, which is not acceptable because the cell gridlines interfere with text legibility.

Another user is seeing arrowhead lines lose the color he has assigned to them and revert to black when saved and reopened.

Excel 97, WinNT 4, both Compaq and Dell machines...TIA