--- a/gamelib/visualize.py	Fri May 11 16:39:17 2012 +0200
+++ b/gamelib/visualize.py	Fri May 11 17:13:28 2012 +0200
@@ -5,7 +5,7 @@
 
 COLORS = {
     'schematic': 'green',
-    'research': 'pink',
+    'research': 'blue',
     }
 
 
@@ -14,13 +14,15 @@
 
 
 def add_node(rt, science):
-    rt.add_node(science, label=science.NAME, color=color(science))
+    rt.add_node(science, label=science.NAME, color=color(science),
+                group=science.NAME, fillcolor='light' + color(science),
+                style='filled')
 
 
 def add_pre_node(rt, prior, science, points):
     name = "%s%s" % (science.NAME[:3], points)
     if name not in rt:
-        rt.add_node(name, color=color(science))
+        rt.add_node(name, color=color(science), group=science.NAME)
         rt.add_edge(prior, name, color=color(science))
     return name
 
@@ -33,13 +35,18 @@
         rt.add_edge(prior, science, color=color(science))
 
 
-def construct_research_tree(lab):
-    rt = networkx.DiGraph()
-    sciences = lab.new_research + lab.new_schematics
+def graph_sciences(rt, sciences):
     for science in sciences:
         add_node(rt, science)
     for science in sciences:
         add_prereqs(rt, science)
+
+
+def construct_research_tree(lab):
+    rt = networkx.DiGraph()
+    # We do these separately for a better layout.
+    graph_sciences(rt, lab.new_research)
+    graph_sciences(rt, lab.new_schematics)
     return rt