reset richtextbox

How do you reset a RichTextBox? I wrote some code that changes the RichTextBox1.SelectionColor = Color.White and RichTextBox1.SelectionBackColor = Color.Red. I'd like to change all the text in the RichTextBox back to Black and no back color.

Like this:

Code:

---

Dim i As Integer = RichTextBox1.SelectionStart
        RichTextBox1.SelectAll()
        RichTextBox1.SelectionColor = Color.Black
        RichTextBox1.SelectionBackColor = Me.BackColor 'Or White
        RichTextBox1.BackColor = Me.BackColor 'Or White
        RichTextBox1.SelectionStart = i

---

Thanks