Change textbox backcolor then save workbook?

Hi

When I try to use the code below the backcolor of the textbox does not change until the workbook is saved. I want the textbox to change colour when the save button has been hit on the userform. I would then have another set of code to change the colour back to its original colour once the workbook has been saved. I can't get any colours to change until the macro finishes running. Is this a timing problem?

Thanks in advance.

Private Sub CommandButton1_Click()
 
UserForm1.TextBox1.BackColor = vbRed
 
 
Workbooks("testbook").save
 
'here I change the textbox backcolor to black again
 
UserForm1.TextBox1.BackColor = vbblack
 
End Sub