diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -12,7 +12,7 @@
     'core.pkg.css' => '9c725fa0',
     'core.pkg.js' => 'f998932d',
     'darkconsole.pkg.js' => 'e7393ebb',
-    'differential.pkg.css' => '13726e1c',
+    'differential.pkg.css' => 'f69afb45',
     'differential.pkg.js' => '40b18f35',
     'diffusion.pkg.css' => '91c5d3a6',
     'diffusion.pkg.js' => '84c8f8fd',
@@ -59,7 +59,7 @@
     'rsrc/css/application/dashboard/dashboard.css' => 'bc6f2127',
     'rsrc/css/application/diff/inline-comment-summary.css' => '51efda3a',
     'rsrc/css/application/differential/add-comment.css' => 'c47f8c40',
-    'rsrc/css/application/differential/changeset-view.css' => '6d0fc277',
+    'rsrc/css/application/differential/changeset-view.css' => '11395d9c',
     'rsrc/css/application/differential/core.css' => '5b7b8ff4',
     'rsrc/css/application/differential/phui-inline-comment.css' => '5953c28e',
     'rsrc/css/application/differential/revision-comment.css' => '14b8565a',
@@ -574,7 +574,7 @@
     'conpherence-thread-manager' => 'c8b5ee6f',
     'conpherence-transaction-css' => '85129c68',
     'd3' => 'a11a5ff2',
-    'differential-changeset-view-css' => '6d0fc277',
+    'differential-changeset-view-css' => '11395d9c',
     'differential-core-view-css' => '5b7b8ff4',
     'differential-inline-comment-editor' => '2e3f9738',
     'differential-revision-add-comment-css' => 'c47f8c40',
@@ -1032,6 +1032,9 @@
       'javelin-dom',
       'javelin-typeahead-normalizer',
     ),
+    '11395d9c' => array(
+      'phui-inline-comment-view-css',
+    ),
     '12884df9' => array(
       'javelin-behavior',
       'javelin-stratcom',
@@ -1455,9 +1458,6 @@
       'javelin-install',
       'javelin-util',
     ),
-    '6d0fc277' => array(
-      'phui-inline-comment-view-css',
-    ),
     '6d3e1947' => array(
       'javelin-behavior',
       'javelin-diffusion-locate-file-source',
diff --git a/src/applications/differential/render/DifferentialChangesetOneUpRenderer.php b/src/applications/differential/render/DifferentialChangesetOneUpRenderer.php
--- a/src/applications/differential/render/DifferentialChangesetOneUpRenderer.php
+++ b/src/applications/differential/render/DifferentialChangesetOneUpRenderer.php
@@ -97,16 +97,22 @@
               $line = array($hidden, $line);
             }
 
-            $cells[] = phutil_tag('th', array('id' => $left_id), $line);
+            $cells[] = phutil_tag(
+              'th',
+              array(
+                'id' => $left_id,
+                'class' => $class,
+              ),
+              $line);
 
-            $cells[] = phutil_tag('th', array());
+            $cells[] = phutil_tag('th', array('class' => $class));
             $cells[] = $no_copy;
             $cells[] = phutil_tag('td', array('class' => $class), $p['render']);
             $cells[] = $no_coverage;
           } else {
             if ($p['htype']) {
               $class = 'right new';
-              $cells[] = phutil_tag('th', array());
+              $cells[] = phutil_tag('th', array('class' => $class));
             } else {
               $class = 'right';
               if ($left_prefix) {
@@ -138,7 +144,13 @@
               $line = array($hidden, $line);
             }
 
-            $cells[] = phutil_tag('th', array('id' => $right_id), $line);
+            $cells[] = phutil_tag(
+              'th',
+              array(
+                'id' => $right_id,
+                'class' => $class,
+              ),
+              $line);
 
             $cells[] = $no_copy;
             $cells[] = phutil_tag('td', array('class' => $class), $p['render']);
diff --git a/src/applications/differential/render/DifferentialChangesetTwoUpRenderer.php b/src/applications/differential/render/DifferentialChangesetTwoUpRenderer.php
--- a/src/applications/differential/render/DifferentialChangesetTwoUpRenderer.php
+++ b/src/applications/differential/render/DifferentialChangesetTwoUpRenderer.php
@@ -306,9 +306,9 @@
       $zero_space = "\xE2\x80\x8B";
 
       $html[] = phutil_tag('tr', array(), array(
-        phutil_tag('th', array('id' => $o_id), $o_num),
+        phutil_tag('th', array('id' => $o_id, 'class' => $o_classes), $o_num),
         phutil_tag('td', array('class' => $o_classes), $o_text),
-        phutil_tag('th', array('id' => $n_id), $n_num),
+        phutil_tag('th', array('id' => $n_id, 'class' => $n_classes), $n_num),
         $n_copy,
         phutil_tag(
           'td',
diff --git a/webroot/rsrc/css/application/differential/changeset-view.css b/webroot/rsrc/css/application/differential/changeset-view.css
--- a/webroot/rsrc/css/application/differential/changeset-view.css
+++ b/webroot/rsrc/css/application/differential/changeset-view.css
@@ -121,6 +121,16 @@
   cursor: auto;
 }
 
+.differential-diff th.old {
+  background: #ffdddd;
+  border-right-color: #f8cbcb;
+}
+
+.differential-diff th.new {
+  background: #dbffdb;
+  border-right-color: #a6f3a6;
+}
+
 .differential-diff td.old,
 .differential-diff td.old-full {
   background: #ffecec;