Right click on the Gantt chart.
Choose Bar Styles...
In the dialog box, select any row that is BELOW the row that contains the
Milestone format definition.
Click Insert Row
Give your new style a name, such as Complete Milestone
Under the Bars tab, select no shape for the Start and Middle columns; select
the milestone shape for the End column. Set Type to Solid and color as you
wish.
In Show for ... Tasks, select Milestone.
In both the From and To columns, select Actual Finish.
Click OK.
Any milestone that is 100 percent complete will have the new style.
--
Reid McTaggart
EPM Architect
Microsoft