Sub ChangeAppColorTheme()
Dim i_RegKey As String
Dim i_Value As String
Dim i_Type As String
Dim myWS As Object
Set myWS = CreateObject("WScript.Shell")
i_RegKey = "HKEY_CURRENT_USERSoftwareMicrosoftOffice" & Application.Version & "CommonTheme"
i_Value = 3 '''1 is blue, 2 is silver, and 3 is black (but the app must be restarted for reg change to take effect)
i_Type = "REG_DWORD"
myWS.RegWrite i_RegKey, i_Value, i_Type
End Sub