Bug 538359 : improve Maven Repositories look in dark mode

Change-Id: Iffa4430513887347554376daf2726c1ba79ddd00
Signed-off-by: Fred Bricon <fbricon@gmail.com>
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
index b030482..aa8fa54 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
@@ -82,13 +82,10 @@
   }
 
   public Color getForeground(Object element) {
-    if(element instanceof RepositoryNode) {
-      if(((RepositoryNode) element).isEnabledIndex()) {
-        return Display.getDefault().getSystemColor(SWT.COLOR_BLACK);
-      }
-      return Display.getDefault().getSystemColor(SWT.COLOR_DARK_GRAY);
+    if(element instanceof RepositoryNode && !((RepositoryNode) element).isEnabledIndex()) {
+        return Display.getDefault().getSystemColor(SWT.COLOR_DARK_GRAY);
     }
-    return Display.getDefault().getSystemColor(SWT.COLOR_BLACK);
+    return null;
   }
 
   public Font getFont(Object element) {