JavaFX css menu borders wrong color

Question

I have a JavaFX Application, with a MenuBar, with 3 Menus, with a few MenuItems each.

After changing the colors of the MenuBar/Menus/MenuItems, I have these brighter bars (below "Unterstützte Melder" and above "Daten laden")

I would like them to have the same color as the MenuItems Background color, i thought those were borders or shadows, but I did not manage to set them to 0 or remove them.

I use CSS to style all my components

CSS File:

.menu-item .label {
    -fx-font-size:14.0px;
    -fx-text-fill: white;
}

.menu-item:focused {
     -fx-background-color: darkgray;
}

.context-menu {
    -fx-background-color: #8a8a8a;
}

#override:focused .label {
    -fx-text-fill: #ff8800;
}

#override .label {
    -fx-text-fill: #ff8800;
}

.menu-bar {
    -fx-background-color: #5c5c5c;
}

.button {
     -fx-background-color: #CCCCCC;
}

.menu .label {
    -fx-text-fill: white;
}

.menu-item {
     -fx-background-color: #5c5c5c;
    
}

.menu {
 -fx-background-color: #5c5c5c;
}

.menu:hover {
 -fx-background-color: darkgray;
}

Answer 1

If you have 1 context-menu on the scene at the same time:

I succeeded to change the backgroung color of Menu node to red by adding this code to the style sheet:

.context-menu {
    -fx-background-color: #ff0000;     
    -fx-border-color:  #ff0000;        
}

I suppose you are attaching your style sheet to the .fxml file, if no, you can do it by specifying the path in SceneBuilder:

If you have 2 context-menu on the scene at the same time:

Just specify 2 style sheets and then attach them sepparately for different MenuBar nodes like on screenshot above. In each style sheet specify .context-menu class with desired properties. This way it won't override each other.