In vba Find the value in column by Color RGB(255,199, 206) and Write the single Value as "Duplicate" in next column. Please view the snap for more understanding.

I am trying below code to highlight the Cells and then I wanted to use new code to print "duplicate" infront of highlighted cells . Can you please guide me .
Sub Highlight_Duplicate_Value()
Columns("AD:AD").Select
Selection.FormatConditions.AddUniqueValues
Selection.FormatConditions(Selection.FormatConditions.Count).SetFirstPriority
Selection.FormatConditions(1).DupeUnique = xlDuplicate
With Selection.FormatConditions(1).Font
.Color = -16383844
.TintAndShade = 0
End With
With Selection.FormatConditions(1).Interior
.PatternColorIndex = xlAutomatic
.Color = 13551615
.TintAndShade = 0
End With
End Sub
Thank You