Merged in feature/IO-2869-Production-Board-List-Alert-2 (pull request #1587)

- mute gray more, mute more buttons

client/src/App/App.styles.scss

@@ -163,7 +163,7 @@
 }
 
 .muted-button {
-  color: grey;
+  color: lightgray;
   border: none;
   background: none;
   cursor: pointer;

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);