private void InitColors(CmykColor purpleColor)
{
comboBox.Items.Add(new ColorAndText(MiscText.Black, SpecialColor.Black, CmykColor.FromCmyk(0, 0, 0, 1)));
comboBox.Items.Add(new ColorAndText(MiscText.Purple, SpecialColor.Purple, purpleColor));
comboBox.Items.Add(new ColorAndText(MiscText.Red, CmykColor.FromCmyk(0, 1, 1, 0)));
comboBox.Items.Add(new ColorAndText(MiscText.Yellow, CmykColor.FromCmyk(0, 0, 1, 0)));
comboBox.Items.Add(new ColorAndText(MiscText.Green, CmykColor.FromCmyk(1, 0, 1, 0)));
comboBox.Items.Add(new ColorAndText(MiscText.LightBlue, CmykColor.FromCmyk(1, 0, 0, 0)));
comboBox.Items.Add(new ColorAndText(MiscText.DarkBlue, CmykColor.FromCmyk(1, 1, 0, 0)));
comboBox.Items.Add(new ColorAndText(MiscText.CustomColor, null, null));
}