Update CSS
diff --git a/platform/org.eclipse.platform/plugin.xml b/platform/org.eclipse.platform/plugin.xml
index d1f36af..6687494 100644
--- a/platform/org.eclipse.platform/plugin.xml
+++ b/platform/org.eclipse.platform/plugin.xml
@@ -187,7 +187,7 @@
          os="aix">
    </theme>
    <theme
-         basestylesheeturi="css/e4_default_gtk.css"
+         basestylesheeturi="css/e4_classic_winxp.css"
          id="org.eclipse.e4.ui.css.theme.e4_default"
          label="HPUX"
          os="hpux">