theme - opacity only on activity action icon

src/vs/workbench/browser/parts/activitybar/activitybarActions.ts

@@ -675,7 +675,7 @@ registerThemingParticipant((theme: ITheme, collector: ICssStyleCollector) => {
 		const focusBorder = theme.getColor(focus);
 
 		collector.addRule(`
-			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item {
+			.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item .action-label {
 				opacity: 0.6;
 			}
 

src/vs/workbench/browser/parts/activitybar/media/activityaction.css

@@ -67,8 +67,8 @@
 	text-align: center;
 }
 
-.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active,
-.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:hover {
+.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item.active .action-label,
+.monaco-workbench > .activitybar > .content .monaco-action-bar .action-item:hover .action-label {
 	opacity: 1;
 }