Good morning Cram
Something like this seems to work OK. When run it will prompt for a range 1 - highlight your range in column A. When asked for range 2 select the range in column C. The unique items will then be coloured yellow (ColorIndex 6) :
Sub test()
Set a = Application.InputBox("Range 1", , , , , , , 8)
Set b = Application.InputBox("Range 2", , , , , , , 8)
For Each rng1 In a
x = 0
For Each rng2 In b
If rng1.Value = rng2.Value Then x = x + 1
Next rng2
If x = 0 Then rng1.Interior.ColorIndex = 6
Next rng1
For Each rng1 In b
x = 0
For Each rng2 In a
If rng1.Value = rng2.Value Then x = x + 1
Next rng2
If x = 0 Then rng1.Interior.ColorIndex = 6
Next rng1
End Sub
HTH
DominicB
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