diff --git a/OpenNest/ColorScheme.cs b/OpenNest/ColorScheme.cs
index ba8615d..f525862 100644
--- a/OpenNest/ColorScheme.cs
+++ b/OpenNest/ColorScheme.cs
@@ -13,6 +13,22 @@ namespace OpenNest
         private Color edgeSpacingColor;
         private Color previewPartColor;
 
+        public static readonly Color[] PartColors = new Color[]
+        {
+            Color.FromArgb(205, 92, 92),    // Indian Red
+            Color.FromArgb(148, 103, 189),  // Medium Purple
+            Color.FromArgb(75, 180, 175),   // Teal
+            Color.FromArgb(210, 190, 75),   // Goldenrod
+            Color.FromArgb(190, 85, 175),   // Orchid
+            Color.FromArgb(185, 115, 85),   // Sienna
+            Color.FromArgb(120, 100, 190),  // Slate Blue
+            Color.FromArgb(200, 100, 140),  // Rose
+            Color.FromArgb(80, 175, 155),   // Sea Green
+            Color.FromArgb(195, 160, 85),   // Dark Khaki
+            Color.FromArgb(175, 95, 160),   // Plum
+            Color.FromArgb(215, 130, 130),  // Light Coral
+        };
+
         public static readonly ColorScheme Default = new ColorScheme
         {
             BackgroundColor = Color.DarkGray,
diff --git a/OpenNest/Forms/CadConverterForm.cs b/OpenNest/Forms/CadConverterForm.cs
index 074697a..9a7ad83 100644
--- a/OpenNest/Forms/CadConverterForm.cs
+++ b/OpenNest/Forms/CadConverterForm.cs
@@ -82,17 +82,13 @@ namespace OpenNest.Forms
                 checkedListBox3.Items.Add(lineType, false);
         }
 
+        private static int colorIndex;
+
         private static Color GetNextColor()
         {
-            //if (colorIndex >= Colors.Length)
-            //    colorIndex = 0;
-
-            //var color = Colors[colorIndex];
-
-            //colorIndex++;
-
-            return new HSLColor(new Random().NextDouble() * 240, 240, 160);
- 
+            var color = ColorScheme.PartColors[colorIndex % ColorScheme.PartColors.Length];
+            colorIndex++;
+            return color;
         }
 
         public List<Drawing> GetDrawings()
@@ -331,157 +327,4 @@ namespace OpenNest.Forms
         public override int GetHashCode() => Argb;
     }
 
-    public class RandomColorGenerator
-    {
-        private readonly Random random;
-
-        public RandomColorGenerator()
-        {
-            random = new Random();
-        }
-
-        public Color GetNext()
-        {
-            var r = random.Next(255);
-            Thread.Sleep(20);
-            var g = random.Next(255);
-            Thread.Sleep(20);
-            var b = random.Next(255);
-
-            return Color.FromArgb(r, g, b);
-        }
-    }
-
-    public class HSLColor
-    {
-        // Private data members below are on scale 0-1
-        // They are scaled for use externally based on scale
-        private double hue = 1.0;
-        private double saturation = 1.0;
-        private double luminosity = 1.0;
-
-        private const double scale = 240.0;
-
-        public double Hue
-        {
-            get { return hue * scale; }
-            set { hue = CheckRange(value / scale); }
-        }
-        public double Saturation
-        {
-            get { return saturation * scale; }
-            set { saturation = CheckRange(value / scale); }
-        }
-        public double Luminosity
-        {
-            get { return luminosity * scale; }
-            set { luminosity = CheckRange(value / scale); }
-        }
-
-        private double CheckRange(double value)
-        {
-            if (value < 0.0)
-                value = 0.0;
-            else if (value > 1.0)
-                value = 1.0;
-            return value;
-        }
-
-        public override string ToString()
-        {
-            return String.Format("H: {0:#0.##} S: {1:#0.##} L: {2:#0.##}", Hue, Saturation, Luminosity);
-        }
-
-        public string ToRGBString()
-        {
-            Color color = (Color)this;
-            return String.Format("R: {0:#0.##} G: {1:#0.##} B: {2:#0.##}", color.R, color.G, color.B);
-        }
-
-        #region Casts to/from System.Drawing.Color
-        public static implicit operator Color(HSLColor hslColor)
-        {
-            double r = 0, g = 0, b = 0;
-            if (hslColor.luminosity != 0)
-            {
-                if (hslColor.saturation == 0)
-                    r = g = b = hslColor.luminosity;
-                else
-                {
-                    double temp2 = GetTemp2(hslColor);
-                    double temp1 = 2.0 * hslColor.luminosity - temp2;
-
-                    r = GetColorComponent(temp1, temp2, hslColor.hue + 1.0 / 3.0);
-                    g = GetColorComponent(temp1, temp2, hslColor.hue);
-                    b = GetColorComponent(temp1, temp2, hslColor.hue - 1.0 / 3.0);
-                }
-            }
-            return Color.FromArgb((int)(255 * r), (int)(255 * g), (int)(255 * b));
-        }
-
-        private static double GetColorComponent(double temp1, double temp2, double temp3)
-        {
-            temp3 = MoveIntoRange(temp3);
-            if (temp3 < 1.0 / 6.0)
-                return temp1 + (temp2 - temp1) * 6.0 * temp3;
-            else if (temp3 < 0.5)
-                return temp2;
-            else if (temp3 < 2.0 / 3.0)
-                return temp1 + ((temp2 - temp1) * ((2.0 / 3.0) - temp3) * 6.0);
-            else
-                return temp1;
-        }
-        private static double MoveIntoRange(double temp3)
-        {
-            if (temp3 < 0.0)
-                temp3 += 1.0;
-            else if (temp3 > 1.0)
-                temp3 -= 1.0;
-            return temp3;
-        }
-        private static double GetTemp2(HSLColor hslColor)
-        {
-            double temp2;
-            if (hslColor.luminosity < 0.5)  //<=??
-                temp2 = hslColor.luminosity * (1.0 + hslColor.saturation);
-            else
-                temp2 = hslColor.luminosity + hslColor.saturation - (hslColor.luminosity * hslColor.saturation);
-            return temp2;
-        }
-
-        public static implicit operator HSLColor(Color color)
-        {
-            HSLColor hslColor = new HSLColor();
-            hslColor.hue = color.GetHue() / 360.0; // we store hue as 0-1 as opposed to 0-360 
-            hslColor.luminosity = color.GetBrightness();
-            hslColor.saturation = color.GetSaturation();
-            return hslColor;
-        }
-        #endregion
-
-        public void SetRGB(int red, int green, int blue)
-        {
-            HSLColor hslColor = (HSLColor)Color.FromArgb(red, green, blue);
-            this.hue = hslColor.hue;
-            this.saturation = hslColor.saturation;
-            this.luminosity = hslColor.luminosity;
-        }
-
-        public HSLColor() { }
-        public HSLColor(Color color)
-        {
-            SetRGB(color.R, color.G, color.B);
-        }
-        public HSLColor(int red, int green, int blue)
-        {
-            SetRGB(red, green, blue);
-        }
-        public HSLColor(double hue, double saturation, double luminosity)
-        {
-            this.Hue = hue;
-            this.Saturation = saturation;
-            this.Luminosity = luminosity;
-        }
-
-    }
 }