UserForm with three CheckBoxes for a color test.

Hello,
I make a little userform for a colortest.
It work with a Commandbutton (controle).
Is there any possibility to work without that button?

Thanks in advance,

NonkeLuc.

Private Sub Controle_Click()

 If CheckBox1.Value = True And CheckBox2.Value = True And CheckBox3.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(165, 42, 42) ' brown
 ElseIf CheckBox1.Value = True And CheckBox2.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(255, 128, 0) ' orange
 ElseIf CheckBox1.Value = True And CheckBox3.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(238, 130, 238) ' violet
 ElseIf CheckBox2.Value = True And CheckBox3.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(0, 128, 0) ' green
 ElseIf CheckBox1.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(255, 0, 0) ' red
 ElseIf CheckBox2.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(255, 255, 0) ' yellow
 ElseIf CheckBox3.Value = True Then
 UserForm1.TextBox1.BackColor = RGB(0, 0, 255) ' blue
 Else: UserForm1.TextBox1.BackColor = RGB(255, 255, 255) ' white
 End If
 End Sub