COMO HACER QUE SUME POR COLORES

Function Sumarcolor(Celdacolor As Range, Rangosuma As Range) As Double
Dim celda As Range
For Each celda In Rangosuma
If celda.Interior.ColorIndex = Celdacolor.Cells(1, 1).Interior.ColorIndex Then Sumarcolor = Sumarcolor + celda
Next celda
Set celda = Nothing
End Function