diff --git a/org.adempiere.ui.zk/theme/default/css/theme.css.dsp b/org.adempiere.ui.zk/theme/default/css/theme.css.dsp
index 363eb2e6d8..b31ec5bc7a 100644
--- a/org.adempiere.ui.zk/theme/default/css/theme.css.dsp
+++ b/org.adempiere.ui.zk/theme/default/css/theme.css.dsp
@@ -547,3 +547,7 @@ img.z-group-img-close {
 .z-label, .z-toolbarbutton-cnt, tr.z-treerow, tr.z-treerow a, tr.z-treerow a:visited {
 	color: #333;
 }
+
+.z-textbox-readonly, .z-intbox-readonly, .z-longbox-readonly, .z-doublebox-readonly, .z-decimalbox-readonly {
+	background-color: #F0F0F0;
+}