--- a/pull-workflow.tex
+++ b/pull-workflow.tex
@@ -1,11 +1,11 @@
 \begin{frame}{Pull Workflow}
-  \tikzstyle{rev}+=[on chain, minimum size=5mm, font=\small]
+  \tikzstyle{rev}+=[on chain, minimum size=6mm, font=\small]
   \tikzstyle{a}=[rev, draw=yellow!50!black!50, bottom color=yellow!50!black!20]
   \tikzstyle{b}=[rev, draw=green!30!black!50, bottom color=green!30!black!20]
-  \tikzstyle{c}=[rev, draw=blue!50!black!50, bottom color=blue!50!black!20]
+  \tikzstyle{c}=[rev, draw=red!50!black!50, bottom color=red!50!black!20]
   \tikzstyle{join-above}=[out=0, in=240]
   \tikzstyle{join-below}=[out=-90, in=180]
-  \tikzset{node distance=8mm and 10mm, on grid}
+  \tikzset{node distance=10mm and 12mm, on grid}
 
   People have read-only access (e.g., \cmd{hg serve}):
   \medskip
@@ -14,33 +14,33 @@
     \begin{scope}[start chain=alice]
       \node[rev,on chain,label=above:Alice] {0};
       \begin{scope}[start branch=bob]
-        \node<5->[b,on chain=going below right, join=by join-below] {1};
+        \node<5->[b,on chain=going below right, join=by join-below] {$B_1$};
       \end{scope}
-      \node<2->[a,join] {1};
-      \node<3->[a,join] {2};
-      \node<6->[a,join,join=with alice/bob-end by join-above] {3};
+      \node<2->[a,join] {$A_1$};
+      \node<3->[a,join] {$A_2$};
+      \node<6->[a,join,join=with alice/bob-end by join-above] {$A_3$};
     \end{scope}
 
     \begin{scope}[start chain=bob, shift={(6, 0)}]
       \node[rev,label=above:Bob] {0};
-      \node<4->[b,join] {1};
+      \node<4->[b,join] {$B_1$};
     \end{scope}
 
     \begin{scope}[start chain=carla, shift={(2, -3)}]
       \node[rev,label=above:Carla] {0};
       \begin{scope}[start branch=bob]
-        \node<9->[b,on chain=going below right, join=by join-below] {1};
+        \node<9->[b,on chain=going below right, join=by join-below] {$B_1$};
       \end{scope}
       \begin{scope}[start branch=alice]
-        \node<11->[a,join=by join-below,below=of carla/bob-2] {1};
-        \node<11->[a,join] {2};
-        \node<11->[a,join,join=with carla/bob-end by {out=0, in=120}] {3};
+        \node<11->[a,join=by join-below,below=of carla/bob-2] {$A_1$};
+        \node<11->[a,join] {$A_2$};
+        \node<11->[a,join,join=with carla/bob-end by {out=0, in=120}] {$A_3$};
       \end{scope}
 
-      \node<7->[c,join] {1};
-      \node<8->[c,join] {2};
-      \node<10->[c,join] {3};
-      \node<12->[c,join, join=with carla/alice-end by {out=0, in=-90}] {4};
+      \node<7->[c,join] {$C_1$};
+      \node<8->[c,join] {$C_2$};
+      \node<10->[c,join] {$C_3$};
+      \node<12->[c,join, join=with carla/alice-end by {out=0, in=-90}] {$C_4$};
 
       \node<1-5>[fit=(alice-begin) (alice-end)] (A) {};
       \node<6->[fit=(alice-begin) (alice-end) (alice/bob-end)] (A) {};