- mute gray more, mute more buttons

Signed-off-by: Dave Richer <dave@imexsystems.ca>

client/src/components/production-list-columns/production-list-columns.empassignment.component.jsx

@@ -148,6 +148,7 @@ export function ProductionListEmpAssignment({ insertAuditTrail, bodyshop, record
         ) : (
           <PlusCircleFilled
             style={iconStyle}
+            className="muted-button"
             onClick={() => {
               setAssignment({ operation: type });
               setVisibility(true);