Font color in RichTextBox problem

[adifel]

I'm trying to set the font color in a richtextbox (rtbSample) based on the position of 3 scrollbars (scrRGB(0,1,2))and it's rgb value in a textbox (txtRGB) but it just won't work. Any ideas?

Private Sub scrRGB_Change(Index As Integer)
  Dim CombinedValue As Long
  CombinedValue = RGB(scrRGB(0).Value, scrRGB(1).Value, scrRGB(2).Value)
  txtRGB.Text = "&H" & CombinedValue
  picRGB.BackColor = CombinedValue
End Sub 'scrRGB_Change(Index As Integer)
Private Sub txtRGB_Change()
  rtbSample.SelStart = 0
  rtbSample.SelLength = Len(rtbSample.Text)
  rtbSample.SelColor = txtRGB.Text
End Sub
Private Sub txtRGB_GotFocus()
  If Len(txtRGB.Text) > 0 Then
    txtRGB.SelStart = 0
    txtRGB.SelLength = Len(txtRGB.Text)
  End If
End Sub 'txtRGB_GotFocus()