Color large table load more row

styles/42-components-data-display.css

@@ -101,6 +101,10 @@
   background: var(--color-light-grey);
 }
 
+.sg-large-table__row--load-more {
+  background: var(--color-medium-grey);
+}
+
 .sg-large-table__cell {
   min-width: 0;
   padding: 0 var(--spacing-small);