BeginScrollView - But make background darker?

Hi there

I´m creating a Tool for Unity. Now i need the Horizontal Scroll View. But the content background of the view has the same color as the rest of the unity window.

This is my code right now:

    		// hide vertical scrollbar
    		GUIStyle verticalScrollbar = GUI.skin.verticalScrollbar;
    		GUI.skin.verticalScrollbar = GUIStyle.none;
    		// Create ScrollView
    		scrollPos = EditorGUILayout.BeginScrollView(scrollPos, true,false, GUILayout.Height(Screen.width), GUILayout.Height(150));
    		GUILayout.Label("Test");
    		EditorGUILayout.EndScrollView();
    		// restore vertical scrollbar
    		GUI.skin.verticalScrollbar = verticalScrollbar;

I want to make it darker (or better use a picture as tiled background)…

How can i change the background of the ScrollView?

Read up on GuiSkins. Unity - Manual: Customization . Create your style and set the image you want as the normal background.