Win10: Use dark gray instead of black for selected toggle button

Issue-Ref: 4061 Issue-Url: https://af3-developer.fortiss.org/issues/4061

Signed-off-by: Simon Barner barner@fortiss.org

org.fortiss.tooling.common.ui/res/jfxtras/JMetroLightTheme.css

@@ -115,7 +115,7 @@
 }
 
 .toggle-button:selected {
-    -fx-background-color: black;
+    -fx-background-color: #7c7c7c;
     -fx-text-fill: white;
 }