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;
        }