/// <summary>
/// code to change all of the colours on the form
/// </summary>
private void colourchange()
{
ColourChange.ColourForm(this);
ColourChange.ColourButton(cmdLogin);
ColourChange.ColourLabel(lblUsername);
ColourChange.ColourLabel(lblPassword);
ColourChange.ColourLabel(lblVerifyPassword);
ColourChange.ColourTextbox(txtUsername);
ColourChange.ColourTextbox(txtPassword);
ColourChange.ColourTextbox(txtVerifyPassword);
}