/////////////////////////////////////////////////////////////////////////////////////////////////////
        // NON-PUBLIC PROCEDURES
        /////////////////////////////////////////////////////////////////////////////////////////////////////

        /// <summary>
        /// Update all the brushes.
        /// </summary>
        private void UpdateBrushes()
        {
            if (listBox == null)
            {
                return;
            }

            // Calculate light/dark colors
            UIColor lightUIColor = UIColor.FromColor(baseColor);

            lightUIColor.HlsLightness = Math.Min(1.0, lightUIColor.HlsLightness + 0.25);
            UIColor darkUIColor = UIColor.FromColor(baseColor);

            darkUIColor.HlsLightness = Math.Max(0.0, darkUIColor.HlsLightness - 0.25);

            // Get all colors used
            Color lightColor  = lightUIColor.ToColor();
            Color mediumColor = baseColor;
            Color darkColor   = darkUIColor.ToColor();

            // Update brushes
            solidBrushData.Brush = new SolidColorBrush(mediumColor);

            vertLightToMediumBrushData.Brush = new LinearGradientBrush(lightColor, mediumColor, 90.0);
            vertLightToDarkBrushData.Brush   = new LinearGradientBrush(lightColor, darkColor, 90.0);
            vertMediumToLightBrushData.Brush = new LinearGradientBrush(mediumColor, lightColor, 90.0);
            vertMediumToDarkBrushData.Brush  = new LinearGradientBrush(mediumColor, darkColor, 90.0);
            vertDarkToLightBrushData.Brush   = new LinearGradientBrush(darkColor, lightColor, 90.0);
            vertDarkToMediumBrushData.Brush  = new LinearGradientBrush(darkColor, mediumColor, 90.0);

            horizLightToMediumBrushData.Brush = new LinearGradientBrush(lightColor, mediumColor, 0.0);
            horizLightToDarkBrushData.Brush   = new LinearGradientBrush(lightColor, darkColor, 0.0);
            horizMediumToLightBrushData.Brush = new LinearGradientBrush(mediumColor, lightColor, 0.0);
            horizMediumToDarkBrushData.Brush  = new LinearGradientBrush(mediumColor, darkColor, 0.0);
            horizDarkToLightBrushData.Brush   = new LinearGradientBrush(darkColor, lightColor, 0.0);
            horizDarkToMediumBrushData.Brush  = new LinearGradientBrush(darkColor, mediumColor, 0.0);
        }