public ColorWay(Color fg, Color bg)
        {
            Foreground = new ColorComp(fg);
            Background = new ColorComp(bg);

            if (Background.ContrastPen.Color.R == 0)
            {
                // light bg
                Bright = new ColorComp(ColorUtilities.Brighten(fg, -0.6)); // super high contrast
                High   = interpolateToGray(fg, bg, 0.35);                  //closest to FG
                Medium = interpolateToGray(fg, bg, 0.70);
                Low    = interpolateToGray(fg, bg, 0.85);
                VLow   = interpolateToGray(fg, bg, 0.95);
            }
            else
            {
                // dark bg
                Bright = new ColorComp(ColorUtilities.Brighten(fg, 0.60));
                High   = interpolateToGray(fg, bg, 0.25);//closest to FG
                Medium = interpolateToGray(fg, bg, 0.60);
                Low    = interpolateToGray(fg, bg, 0.75);
                VLow   = interpolateToGray(fg, bg, 0.85);
            }
        }