Hi,   If I understand you correctly.. Can you try this ?!:   1. UniServerModule.CustomCSS: ._x-item-disabled .x-form-field {     opacity: 1;     -moz-opacity: 1;     filter: alpha(opacity=100);     color: black;     background: lime; } 2. UniDBEdit->ClientEvents->UniEvents-> beforeInit fn: function beforeInit(sender, config) {     config.disabledCls = "_x-item-disabled"; } Best regards.