diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 0240aa50b4..972c935f64 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -857,7 +857,7 @@ void Application::mouseMoveEvent(QMouseEvent* event) {
 
 const bool MAKE_SOUND_ON_VOXEL_HOVER = false;
 const bool MAKE_SOUND_ON_VOXEL_CLICK = true;
-const float HOVER_VOXEL_FREQUENCY = 14080.f;
+const float HOVER_VOXEL_FREQUENCY = 7040.f;
 const float HOVER_VOXEL_DECAY = 0.999f;
 
 void Application::mousePressEvent(QMouseEvent* event) {
diff --git a/interface/src/Util.cpp b/interface/src/Util.cpp
index f39dc91267..61b9b2d7ca 100644
--- a/interface/src/Util.cpp
+++ b/interface/src/Util.cpp
@@ -224,38 +224,53 @@ void noiseTest(int w, int h) {
 }
     
 void renderWorldBox() {
-    //  Show edge of world 
+    //  Show edge of world
+    float red[] = {1, 0, 0};
+    float green[] = {0, 1, 0};
+    float blue[] = {0, 0, 1};
+    float gray[] = {0.5, 0.5, 0.5};
+    
     glDisable(GL_LIGHTING);
-    glColor4f(1.0, 1.0, 1.0, 1.0);
     glLineWidth(1.0);
     glBegin(GL_LINES);
-    glColor3f(1, 0, 0);
+    glColor3fv(red);
     glVertex3f(0, 0, 0);
     glVertex3f(TREE_SCALE, 0, 0);
-    glColor3f(0, 1, 0);
+    glColor3fv(green);
     glVertex3f(0, 0, 0);
     glVertex3f(0, TREE_SCALE, 0);
-    glColor3f(0, 0, 1);
+    glColor3fv(blue);
     glVertex3f(0, 0, 0);
     glVertex3f(0, 0, TREE_SCALE);
+    glColor3fv(gray);
+    glVertex3f(0, 0, TREE_SCALE);
+    glVertex3f(TREE_SCALE, 0, TREE_SCALE);
+    glVertex3f(TREE_SCALE, 0, TREE_SCALE);
+    glVertex3f(TREE_SCALE, 0, 0);
     glEnd();
-    //  Draw little marker dots along the axis
+    //  Draw marker dots at very end
     glEnable(GL_LIGHTING);
     glPushMatrix();
     glTranslatef(TREE_SCALE, 0, 0);
-    glColor3f(1, 0, 0);
+    glColor3fv(red);
     glutSolidSphere(0.125, 10, 10);
     glPopMatrix();
     glPushMatrix();
     glTranslatef(0, TREE_SCALE, 0);
-    glColor3f(0, 1, 0);
+    glColor3fv(green);
     glutSolidSphere(0.125, 10, 10);
     glPopMatrix();
     glPushMatrix();
     glTranslatef(0, 0, TREE_SCALE);
-    glColor3f(0, 0, 1);
+    glColor3fv(blue);
     glutSolidSphere(0.125, 10, 10);
     glPopMatrix();
+    glPushMatrix();
+    glColor3fv(gray);
+    glTranslatef(TREE_SCALE, 0, TREE_SCALE);
+    glutSolidSphere(0.125, 10, 10);
+    glPopMatrix();
+
 }
 
 double diffclock(timeval *clock1,timeval *clock2)