diff --git a/active_projects/eop/histograms.py b/active_projects/eop/histograms.py
index 97ed6445..5f89a407 100644
--- a/active_projects/eop/histograms.py
+++ b/active_projects/eop/histograms.py
@@ -18,7 +18,11 @@ class Histogram(VMobject):
         "y_scale" : 1.0,
         "x_labels" : "auto", # widths, mids, auto, none, [...]
         "y_labels" : "auto", # auto, none, [...]
-        "x_min" : 0
+        "y_label_position" : "top", # "center"
+        "x_min" : 0,
+        "bar_stroke_width" : 5,
+        "outline_stroke_width" : 0,
+        "stroke_color" : WHITE
     }
 
     def __init__(self, x_values, y_values, mode = "widths", **kwargs):
@@ -119,6 +123,8 @@ class Histogram(VMobject):
             bar = Rectangle(
                 width = self.widths_scaled[i],
                 height = self.y_values_scaled[i],
+                stroke_width = self.bar_stroke_width,
+                stroke_color = self.stroke_color,
             )
             t = float(x - self.x_min)/(self.x_max - self.x_min)
             bar_color = interpolate_color(
@@ -127,7 +133,6 @@ class Histogram(VMobject):
                 t
             )
             bar.set_fill(color = bar_color, opacity = 1)
-            bar.set_stroke(width = 0)
             bar.next_to(previous_bar,RIGHT,buff = 0, aligned_edge = DOWN)
             
             self.bars.add(bar)
@@ -137,7 +142,12 @@ class Histogram(VMobject):
             self.x_labels_group.add(x_label)
 
             y_label = TextMobject(self.y_labels[i])
-            y_label.next_to(bar, UP)
+            if self.y_label_position == "top":
+                y_label.next_to(bar, UP)
+            elif self.y_label_position == "center":
+                y_label.move_to(bar)
+            else:
+                raise Exception("y_label_position must be top or center")
             self.y_labels_group.add(y_label)
 
             if i == 0:
@@ -155,8 +165,9 @@ class Histogram(VMobject):
             # lower left
         outline_points.append(outline_points[0])
 
-        self.outline = Polygon(*outline_points)
-        self.outline.set_stroke(color = WHITE)
+        self.outline = Polygon(*outline_points,
+            stroke_width = self.outline_stroke_width,
+            stroke_color = self.stroke_color)
         self.add(self.bars, self.x_labels_group, self.y_labels_group, self.outline)
 
         print self.submobjects