diff --git a/wrap/qt/gl_label.h b/wrap/qt/gl_label.h
index 10f39b89..51edb9a2 100755
--- a/wrap/qt/gl_label.h
+++ b/wrap/qt/gl_label.h
@@ -40,6 +40,16 @@ namespace vcg
     {
     public:
       Mode()
+      {
+        init();
+      }
+      Mode(Color4b _color)
+      {
+        init();
+        color=_color;
+      }
+
+      void init()
       {
         color=vcg::Color4b(vcg::Color4b::White);
         angle=0;
@@ -144,7 +154,7 @@ namespace vcg
       render(painter,p,text,m);
     }
 
-    static void render(QPainter *painter, const vcg::Point3f &p, const QString &text, Mode &m)
+    static void render(QPainter *painter, const vcg::Point3f &p, const QString &text, const Mode &m)
     {
       GLdouble model[16];
       GLdouble proj[16];
@@ -179,7 +189,7 @@ namespace vcg
 
     static void render(QPainter *painter, const vcg::Point3d &p, const QString &text)
     { render(painter,Point3f::Construct(p),text); }
-    static void render(QPainter *painter, const vcg::Point3d &p, const QString &text, Mode &m)
+    static void render(QPainter *painter, const vcg::Point3d &p, const QString &text, const Mode &m)
     { render(painter,Point3f::Construct(p),text,m); }
 
   };