diff --git a/gertty/app.py b/gertty/app.py
index d726142..66f4d56 100644
--- a/gertty/app.py
+++ b/gertty/app.py
@@ -52,6 +52,8 @@ palette=[('focused', 'default,standout', ''),
          ('draft-comment', 'default', 'dark gray'),
          ('comment', 'light gray', 'dark gray'),
          ('comment-name', 'white', 'dark gray'),
+         ('line-number', 'dark gray', ''),
+         ('focused-line-number', 'dark gray,standout', ''),
          # Change view
          ('change-data', 'light cyan', ''),
          ('change-header', 'light blue', ''),
diff --git a/gertty/view/diff.py b/gertty/view/diff.py
index 5df436b..64809f4 100644
--- a/gertty/view/diff.py
+++ b/gertty/view/diff.py
@@ -86,7 +86,7 @@ class DiffLine(urwid.Button):
                 ln = ''
             else:
                 ln = str(ln)
-            ln_col = urwid.Text(ln)
+            ln_col = urwid.Text(('line-number', ln))
             ln_col.set_wrap_mode('clip')
             line_col = urwid.Text(line)
             line_col.set_wrap_mode('clip')
@@ -100,6 +100,7 @@ class DiffLine(urwid.Button):
                'removed-line': 'focused-removed-line',
                'removed-word': 'focused-removed-word',
                'nonexistent': 'focused-nonexistent',
+               'line-number': 'focused-line-number',
                }
         self._w = urwid.AttrMap(col, None, focus_map=map)