diff --git a/src/10.cs b/src/10.cs
index 0f223b8..5a5997f 100644
--- a/src/10.cs
+++ b/src/10.cs
@@ -208,11 +208,11 @@ internal class Day10 : Day
                 }
                 else if (interiors?.Contains(p) == true)
                 {
-                    Logger.Log($"<bgblue>{drawChars[grid[p]]}<r>");
+                    Logger.Log($"<green>{Constants.SolidSmallSquare}<r>");
                 }
                 else
                 {
-                    Console.Write(drawChars[grid[p]]);
+                    Logger.Log(" ");
                 }
             }
             Logger.LogLine("");
@@ -283,7 +283,7 @@ internal class Day10 : Day
             }
         }
 
-        // RenderGrid(interior);
+        RenderGrid(interior);
 
         return $"Number of spaces interior to the pipeline: <+white>{interior.Count}";
     }
diff --git a/src/Util/Constants.cs b/src/Util/Constants.cs
index 8c9b923..160e86f 100644
--- a/src/Util/Constants.cs
+++ b/src/Util/Constants.cs
@@ -3,10 +3,20 @@
 public static class Constants
 {
     public const char SolidBlock = '█';
+    public const char SolidSquare = '■';
+    public const char SolidSmallSquare = '▪';
+
     public const char BoxVert = '│';
     public const char BoxHorz = '─';
     public const char BoxCurveNE = '╰';
     public const char BoxCurveNW = '╯';
     public const char BoxCurveSW = '╮';
     public const char BoxCurveSE = '╭';
+
+    public const char BoxDoubleVert = '║';
+    public const char BoxDoubleHorz = '═';
+    public const char BoxDoubleNE = '╚';
+    public const char BoxDoubleNW = '╝';
+    public const char BoxDoubleSW = '╗';
+    public const char BoxDoubleSE = '╔';
 }