diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3db7a99
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build/*
+*.user
diff --git a/basevh.cpp b/basevh.cpp
index e8f5c69..c9e3b98 100644
--- a/basevh.cpp
+++ b/basevh.cpp
@@ -854,7 +854,9 @@ void BaseVH::displayContour3D( std::vector< std::vector< cv::Point2f > > contour
     
     edgePolyData->InsertNextCell( VTK_LINE , cell );
     
-    const unsigned char _color[] = { colorVecs[ ee1 ][ ee2 ][ 0 ] , colorVecs[ ee1 ][ ee2 ][ 1 ] , colorVecs[ ee1 ][ ee2 ][ 2 ]};
+    const unsigned char _color[] = { (unsigned char) colorVecs[ ee1 ][ ee2 ][ 0 ] ,
+                                     (unsigned char) colorVecs[ ee1 ][ ee2 ][ 1 ] ,
+                                     (unsigned char) colorVecs[ ee1 ][ ee2 ][ 2 ]};
   
     colors->InsertNextTupleValue(_color);
   }
diff --git a/display3droutines.cpp b/display3droutines.cpp
index 8aec61e..5ee1301 100644
--- a/display3droutines.cpp
+++ b/display3droutines.cpp
@@ -187,7 +187,11 @@ void Display3DRoutines::displayPointSet(std::vector< Eigen::Vector3d >& vertices
 
 	for (int vv = 0; vv < numVerts; vv++)
 	{
-		unsigned char col[] = { colors[vv](0) * 255, colors[vv](1) * 255, colors[vv](2) * 255 };
+		unsigned char col[] = {(unsigned char) (colors[vv](0) * 255),
+        				(unsigned char) (colors[vv](1) * 255),
+        				(unsigned char) (colors[vv](2) * 255) };
+
+
 
 		vColors->InsertNextTupleValue(col);
 
diff --git a/epvh.cpp b/epvh.cpp
index facae1f..63e5078 100644
--- a/epvh.cpp
+++ b/epvh.cpp
@@ -2569,7 +2569,9 @@ namespace tr{
 
 					edgePolyData->InsertNextCell( VTK_LINE , cell );
 
-					const unsigned char _color[] = { colorVecs[ ee1 ][ ee2 ][ 0 ] , colorVecs[ ee1 ][ ee2 ][ 1 ] , colorVecs[ ee1 ][ ee2 ][ 2 ]};
+					const unsigned char _color[] = { (unsigned char)colorVecs[ ee1 ][ ee2 ][ 0 ] ,
+                                           				 (unsigned char) colorVecs[ ee1 ][ ee2 ][ 1 ] ,
+                                           				 (unsigned char) colorVecs[ ee1 ][ ee2 ][ 2 ]};
 
 					colors->InsertNextTupleValue(_color);
 				}