private void kbtnGenerateColour_Click(object sender, EventArgs e)
{
pbColourPreview.BackColor = _colourUtility.GenerateRandomColour(kchkGenerateAlphaValue.Checked);
//int a = randomColour.Next(_max), r = randomColour.Next(_max), g = randomColour.Next(_max), b = randomColour.Next(_max);
//knumRedChannelValue.Value = r;
//knumGreenChannelValue.Value = g;
//knumBlueChannelValue.Value = b;
}