Sub Duplicate()
Dim WorkRng1 As Range, WorkRng2 As Range, Rng1 As Range, Rng2 As Range
Set ws = ThisWorkbook.Sheets("Sheet3")
xTitleId = "KutoolsforExcel"
Set WorkRng1 = Application.InputBox("Range A:", xTitleId, "", Type:=8)
Set WorkRng2 = Application.InputBox("Range B:", xTitleId, Type:=8)
For Each Rng1 In WorkRng1
rng1Value = Rng1.Value
For Each Rng2 In WorkRng2
If rng1Value = Rng2.Value Then
MsgBox rng1Value
Rng1.Interior.Color = VBA.RGB(255, 0, 0)
Else
ws.Cells("A2") = rng1Value
Exit For
End If
Next
Next
End Sub