Thanks to ToitSoft

Public Sub ReverseRGB(ByVal Value As Long, Red As Integer, _
    Green As Integer, Blue As Integer)
Dim lngRed As Long
Dim lngGreen As Long
Dim lngBlue As Long

    lngBlue = Int(Value / 65536)
    lngGreen = Int((Value - (65536 * lngBlue)) / 256)
    lngRed = Value - ((lngBlue * 65536) + (lngGreen * 256))
    Red = lngRed
    Green = lngGreen
    Blue = lngBlue
End Sub