diff --git a/src/constants.js b/src/constants.js
index 11b4c14f..2303388b 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -14,6 +14,8 @@ var TIME = {
 };
 
 var GRAPHICS = {
+  arrowHeadSize: 8,
+
   nodeRadius: 17,
   curveControlPointOffset: 50,
   defaultEasing: 'easeInOut',
diff --git a/src/tree.js b/src/tree.js
index ed862ec6..14de8a47 100644
--- a/src/tree.js
+++ b/src/tree.js
@@ -674,12 +674,17 @@ var VisEdge = Backbone.Model.extend({
     str += coords(headPos);
 
     // arrow head
-    // TODO default sizing? fill the arrow head?
     var delta = GRAPHICS.arrowHeadSize || 10;
     str += ' L' + coords(offset2d(headPos, -delta, delta));
     str += ' L' + coords(offset2d(headPos, delta, delta));
     str += ' L' + coords(headPos);
 
+    // then go back, so we can fill correctly
+    str += 'C';
+    str += coords(offset(headPos, 1)) + ' ';
+    str += coords(offset(tailPos, -1)) + ' ';
+    str += coords(tailPos);
+
     return str;
   },
 
@@ -698,7 +703,8 @@ var VisEdge = Backbone.Model.extend({
       'stroke-width': GRAPHICS.visBranchStrokeWidth,
       'stroke': this.getStrokeColor(),
       'stroke-linecap': 'round',
-      'stroke-linejoin': 'round'
+      'stroke-linejoin': 'round',
+      'fill': this.getStrokeColor()
     });
     path.toBack();
     this.set('path', path);
diff --git a/todo.txt b/todo.txt
index e3837e9c..594a7228 100644
--- a/todo.txt
+++ b/todo.txt
@@ -6,15 +6,12 @@ animation factory? stuff like:
 -highlightCommit(50, 'targetColor') // during search
 -clearHighlightsAllNodes
 
-
 ALSO other big things:
-- Division in their rings based on how many / what branches they are part of
 - Color on branch edges??
 
 Big Graphic things:
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 - colored branch edges. basically 
-- node rings, really think we should do it
 - When you are rebasing and you hit the bottom, all the nodes go in the wrong spot...
           We need some kind of "update everything but this set of nodes" thing...
 - averaging colors!
@@ -31,6 +28,6 @@ Small things to implement:
 
 
 Bugs to fix:
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~