diff --git a/Scintilla.NET/HelperMethods.cs b/Scintilla.NET/HelperMethods.cs
index 3433d7c..d1d3eb7 100644
--- a/Scintilla.NET/HelperMethods.cs
+++ b/Scintilla.NET/HelperMethods.cs
@@ -22,18 +22,18 @@ static HelperMethods()
     }
 
     /// <summary>
-    /// Converts a 32-bit WinAPI color to <see cref="Color"/>.
+    /// Converts an ABGR WinAPI color to <see cref="Color"/>.
     /// </summary>
     /// <param name="color">The color value to convert.</param>
-    /// <returns>A <see cref="Color"/> equivalent of the 32-bit WinAPI color.</returns>
+    /// <returns>A <see cref="Color"/> equivalent of the ABGR WinAPI color.</returns>
     public static Color FromWin32Color(int color)
     {
-        if (color == 0)
+        if ((color & 0xFF_00_00_00) == 0)
             return Color.Transparent;
 
         if (knownColorMap.TryGetValue(color, out Color result))
-            // We do all this nonsense because because Visual Studio designer
-            // does not mark raw colors as default if there exists a known color
+            // We do all this nonsense because Visual Studio designer does not
+            // mark raw colors as default if there exists a known color
             // with the same value.
             return result;
 
@@ -41,15 +41,43 @@ public static Color FromWin32Color(int color)
     }
 
     /// <summary>
-    /// Converts a <see cref="Color"/> to 32-bit WinAPI color.
+    /// Converts a <see cref="Color"/> to ABGR WinAPI color.
     /// </summary>
     /// <param name="color">The <see cref="Color"/> instance to convert.</param>
-    /// <returns>32-bit WinAPI color value of the <see cref="Color"/> instance.</returns>
+    /// <returns>ABGR WinAPI color value of the <see cref="Color"/> instance.</returns>
     public static int ToWin32Color(Color color)
     {
         return (color.A << 24) | (color.R << 0) | (color.G << 8) | (color.B << 16);
     }
 
+    /// <summary>
+    /// Converts an ABGR WinAPI color to <see cref="Color"/> while ignoring the alpha channel.
+    /// </summary>
+    /// <param name="color">The color value to convert.</param>
+    /// <returns>A <see cref="Color"/> equivalent of the ABGR WinAPI color with alpha channel value set to max (opaque).</returns>
+    public static Color FromWin32ColorOpaque(int color)
+    {
+        color |= unchecked((int)0xFF_00_00_00);
+
+        if (knownColorMap.TryGetValue(color, out Color result))
+            // We do all this nonsense because Visual Studio designer does not
+            // mark raw colors as default if there exists a known color
+            // with the same value.
+            return result;
+
+        return Color.FromArgb((color >> 0) & 0xFF, (color >> 8) & 0xFF, (color >> 16) & 0xFF);
+    }
+
+    /// <summary>
+    /// Converts a <see cref="Color"/> to ABGR WinAPI color while ignoring the alpha channel.
+    /// </summary>
+    /// <param name="color">The <see cref="Color"/> instance to convert.</param>
+    /// <returns>ABGR WinAPI color value of the <see cref="Color"/> instance with alpha channel value set to max (opaque).</returns>
+    public static int ToWin32ColorOpaque(Color color)
+    {
+        return (0xFF << 24) | (color.R << 0) | (color.G << 8) | (color.B << 16);
+    }
+
     /// <summary>
     /// Gets the folding state of the control as a delimited string containing line indexes.
     /// </summary>
diff --git a/Scintilla.NET/Indicator.cs b/Scintilla.NET/Indicator.cs
index d8b1c6f..1dc8857 100644
--- a/Scintilla.NET/Indicator.cs
+++ b/Scintilla.NET/Indicator.cs
@@ -137,11 +137,11 @@ public Color ForeColor
         get
         {
             int color = this.scintilla.DirectMessage(NativeMethods.SCI_INDICGETFORE, new IntPtr(Index)).ToInt32();
-            return HelperMethods.FromWin32Color(color);
+            return HelperMethods.FromWin32ColorOpaque(color);
         }
         set
         {
-            int color = HelperMethods.ToWin32Color(value);
+            int color = HelperMethods.ToWin32ColorOpaque(value);
             this.scintilla.DirectMessage(NativeMethods.SCI_INDICSETFORE, new IntPtr(Index), new IntPtr(color));
         }
     }
@@ -160,11 +160,11 @@ public Color HoverForeColor
         get
         {
             int color = this.scintilla.DirectMessage(NativeMethods.SCI_INDICGETHOVERFORE, new IntPtr(Index)).ToInt32();
-            return HelperMethods.FromWin32Color(color);
+            return HelperMethods.FromWin32ColorOpaque(color);
         }
         set
         {
-            int color = HelperMethods.ToWin32Color(value);
+            int color = HelperMethods.ToWin32ColorOpaque(value);
             this.scintilla.DirectMessage(NativeMethods.SCI_INDICSETHOVERFORE, new IntPtr(Index), new IntPtr(color));
         }
     }
diff --git a/Scintilla.NET/Margin.cs b/Scintilla.NET/Margin.cs
index 4a2067f..1e591f9 100644
--- a/Scintilla.NET/Margin.cs
+++ b/Scintilla.NET/Margin.cs
@@ -26,14 +26,14 @@ public Color BackColor
         get
         {
             int color = this.scintilla.DirectMessage(NativeMethods.SCI_GETMARGINBACKN, new IntPtr(Index)).ToInt32();
-            return HelperMethods.FromWin32Color(color);
+            return HelperMethods.FromWin32ColorOpaque(color);
         }
         set
         {
             if (value.IsEmpty)
                 value = Color.Black;
 
-            int color = HelperMethods.ToWin32Color(value);
+            int color = HelperMethods.ToWin32ColorOpaque(value);
             this.scintilla.DirectMessage(NativeMethods.SCI_SETMARGINBACKN, new IntPtr(Index), new IntPtr(color));
         }
     }
diff --git a/Scintilla.NET/Scintilla.cs b/Scintilla.NET/Scintilla.cs
index 73436ec..42982ce 100644
--- a/Scintilla.NET/Scintilla.cs
+++ b/Scintilla.NET/Scintilla.cs
@@ -487,7 +487,7 @@ public void CallTipCancel()
         /// <param name="color">The new highlight text Color. The default is dark blue.</param>
         public void CallTipSetForeHlt(Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             DirectMessage(NativeMethods.SCI_CALLTIPSETFOREHLT, new IntPtr(colour));
         }
 
@@ -1774,7 +1774,7 @@ public int MarkerLineFromHandle(MarkerHandle markerHandle)
         public void MultiEdgeAddLine(int column, Color edgeColor)
         {
             column = Helpers.ClampMin(column, 0);
-            int colour = HelperMethods.ToWin32Color(edgeColor);
+            int colour = HelperMethods.ToWin32ColorOpaque(edgeColor);
 
             DirectMessage(NativeMethods.SCI_MULTIEDGEADDLINE, new IntPtr(column), new IntPtr(colour));
         }
@@ -2569,7 +2569,7 @@ public void SelectAll()
         [Obsolete("Superseded by SelectionAdditionalBackColor property.")]
         public void SetAdditionalSelBack(Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             DirectMessage(NativeMethods.SCI_SETADDITIONALSELBACK, new IntPtr(colour));
         }
 
@@ -2581,7 +2581,7 @@ public void SetAdditionalSelBack(Color color)
         [Obsolete("Superseded by SelectionAdditionalTextColor property.")]
         public void SetAdditionalSelFore(Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             DirectMessage(NativeMethods.SCI_SETADDITIONALSELFORE, new IntPtr(colour));
         }
 
@@ -2614,7 +2614,7 @@ public void SetFoldFlags(FoldFlags flags)
         /// <seealso cref="SetFoldMarginHighlightColor" />
         public void SetFoldMarginColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useFoldMarginColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETFOLDMARGINCOLOUR, useFoldMarginColour, new IntPtr(colour));
@@ -2628,7 +2628,7 @@ public void SetFoldMarginColor(bool use, Color color)
         /// <seealso cref="SetFoldMarginColor" />
         public void SetFoldMarginHighlightColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useFoldMarginHighlightColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETFOLDMARGINHICOLOUR, useFoldMarginHighlightColour, new IntPtr(colour));
@@ -2799,7 +2799,7 @@ public void SetSelection(int caret, int anchor)
         [Obsolete("Superseded by SelectionBackColor property.")]
         public void SetSelectionBackColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useSelectionForeColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETSELBACK, useSelectionForeColour, new IntPtr(colour));
@@ -2814,7 +2814,7 @@ public void SetSelectionBackColor(bool use, Color color)
         [Obsolete("Superseded by SelectionTextColor property.")]
         public void SetSelectionForeColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useSelectionForeColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETSELFORE, useSelectionForeColour, new IntPtr(colour));
@@ -2904,7 +2904,7 @@ public void SetTargetRange(int start, int end)
         [Obsolete("Superseded by WhitespaceBackColor property.")]
         public void SetWhitespaceBackColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useWhitespaceBackColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETWHITESPACEBACK, useWhitespaceBackColour, new IntPtr(colour));
@@ -2921,7 +2921,7 @@ public void SetWhitespaceBackColor(bool use, Color color)
         [Obsolete("Superseded by WhitespaceTextColor property.")]
         public void SetWhitespaceForeColor(bool use, Color color)
         {
-            int colour = HelperMethods.ToWin32Color(color);
+            int colour = HelperMethods.ToWin32ColorOpaque(color);
             IntPtr useWhitespaceForeColour = use ? new IntPtr(1) : IntPtr.Zero;
 
             DirectMessage(NativeMethods.SCI_SETWHITESPACEFORE, useWhitespaceForeColour, new IntPtr(colour));
@@ -4717,7 +4717,7 @@ public Document Document
         /// <see cref="ScintillaNET.EdgeMode.Background" />.
         /// </summary>
         /// <returns>The background Color.</returns>
-        [DefaultValue(typeof(Color), "0, 192, 192, 192")]
+        [DefaultValue(typeof(Color), "Silver")]
         [Category("Long Lines")]
         [Description("The background color to use when indicating long lines.")]
         public Color EdgeColor
@@ -4725,11 +4725,11 @@ public Color EdgeColor
             get
             {
                 int color = DirectMessage(NativeMethods.SCI_GETEDGECOLOUR).ToInt32();
-                return HelperMethods.FromWin32Color(color);
+                return HelperMethods.FromWin32ColorOpaque(color);
             }
             set
             {
-                int color = HelperMethods.ToWin32Color(value);
+                int color = HelperMethods.ToWin32ColorOpaque(value);
                 DirectMessage(NativeMethods.SCI_SETEDGECOLOUR, new IntPtr(color));
             }
         }
diff --git a/Scintilla.NET/Style.cs b/Scintilla.NET/Style.cs
index 64ad2f3..6f27f8c 100644
--- a/Scintilla.NET/Style.cs
+++ b/Scintilla.NET/Style.cs
@@ -98,14 +98,14 @@ public Color BackColor
         get
         {
             int color = this.scintilla.DirectMessage(NativeMethods.SCI_STYLEGETBACK, new IntPtr(Index), IntPtr.Zero).ToInt32();
-            return HelperMethods.FromWin32Color(color);
+            return HelperMethods.FromWin32ColorOpaque(color);
         }
         set
         {
             if (value.IsEmpty)
                 value = Color.White;
 
-            int color = HelperMethods.ToWin32Color(value);
+            int color = HelperMethods.ToWin32ColorOpaque(value);
             this.scintilla.DirectMessage(NativeMethods.SCI_STYLESETBACK, new IntPtr(Index), new IntPtr(color));
         }
     }
@@ -231,14 +231,14 @@ public Color ForeColor
         get
         {
             int color = this.scintilla.DirectMessage(NativeMethods.SCI_STYLEGETFORE, new IntPtr(Index), IntPtr.Zero).ToInt32();
-            return HelperMethods.FromWin32Color(color);
+            return HelperMethods.FromWin32ColorOpaque(color);
         }
         set
         {
             if (value.IsEmpty)
                 value = Color.Black;
 
-            int color = HelperMethods.ToWin32Color(value);
+            int color = HelperMethods.ToWin32ColorOpaque(value);
             this.scintilla.DirectMessage(NativeMethods.SCI_STYLESETFORE, new IntPtr(Index), new IntPtr(color));
         }
     }