to the right of the property box in the property sheet. Using the Color Builder enables you to define custom border colors for controls.You can use the BorderColor property to specify the color of a control's border.
Setting
The BorderColor property setting is a numeric expression that corresponds to the color you want to use for a control's border.
You can use the Color Builder to set this property by clicking the Build button to the right of the property box in the property sheet. Using the Color Builder enables you to define custom border colors for controls.
You can also set this property by using Line/Border Color 
on the Formatting (Form/Report) toolbar, a macro, or Visual Basic.
You can set the default for this property by using a control's default control style or the DefaultControl method in Visual Basic.
Remarks
A control's border color is visible only when its SpecialEffect property is set to Flat or Shadowed. If the SpecialEffect property is set to something other than Flat or Shadowed, setting the BorderColor property changes the SpecialEffect property setting to Flat.