updated the appearance of table headers

git-svn-id: http://redmine.rubyforge.org/svn/trunk@113 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/stylesheets/application.css

@@ -266,6 +266,7 @@ table.list thead th {
     text-align: center;
     background: #eee;
     border: 1px solid #d7d7d7;
+    color: #777;
 }
 
 table.list tbody th {