GUI Box with code defined GUIStyle does not show up... What am I doing wrong?

Hey guys, I'm trying to create a GUI output of a BoxTree. Tree works fine. But: I have a function that defines a new GUIStyle based on a preset struct i hooked up to my BoxTree. However, the Draw call is processed OnGUI and nothing shows up. If i use the default style it shows up and everything is fine.

I'm trying to do a simple thing: Draw a Box on a Position with a predefined background color, an image if nedded and text with any related settings.

Here's the definition code:

         public GUIStyle getStyle(Vector2 sc){
             GUIStyle r = new GUIStyle();
 
             Rect br = getRect(sc); //gets a rectangle based on the current screen size (sc)
 
             if(settings.xSize==Size.fix){
                 r.fixedWidth = br.width;
             }
 
             if(settings.ySize==Size.fix){
                 r.fixedHeight = br.height;
             }
 
             if(settings.pad == null) settings.pad = new RectOffset();
             if(settings.margin == null) settings.margin = new RectOffset();
             if(settings.border==null) settings.border = new RectOffset();
 
             r.alignment = getTextAnchor(); //gets preset text anchor
             r.border = settings.border;
 
             r.wordWrap = true;
 
             r.stretchWidth = settings.stretchWidth;
             r.stretchHeight = settings.stretchHeight;
 
             r.font = settings.font;
             r.fontStyle = settings.fontStyle;
             r.fontSize = settings.fontSize;
             //r.lineHeight = r.fontSize + 4;
             r.imagePosition = settings.contentImagePos;
 
             GUIStyleState ss = new GUIStyleState();
             ss.background = settings.bgImage;
             ss.textColor = settings.textColor;
             r.onNormal = ss;
 
             //r.normal.background = settings.bgImage;
             //r.normal.textColor = settings.textColor;
 
             r.onHover = r.onNormal;
 
             r.padding = settings.pad;
             r.margin = settings.margin;
 
             //r.hover.background = settings.bgImageHover;
             //r.hover.textColor = settings.textHoverColor;
             return r;
         }

Is it true that GUI.Box needs to have a background-image? If so, is there a workaround to produce an image based on canvas stuff?

Here's the Draw call: UpdateStyle has been processed before, so "style" is set from getStyle(sc).

         public void Draw(Vector2 sc){
             //style = getStyle(sc); //performance saving, instead: UpdateStyle(Vector2 sc) if needed
             rect = getRect(sc);
 
             GUI.backgroundColor = settings.backgroundColor;
             GUI.contentColor = settings.textColor;
 
             if(useLayout){
                 if(beginLayout)    BeginLayout();
                 else DrawLayout();
             } else
                 DrawNormal();
 
             if(useButtons){
                 if(useLayout){
                     foreach(Box b in buttons){
                         if(GUILayout.Button(
                             b.Content,
                             b.style,
                             new GUILayoutOption[]{
                                 GUILayout.Width(b.rect.size.x),
                                 GUILayout.Height(b.rect.size.y)
                             })){
                             if(OnBtn!=null) OnBtn(this,buttons.IndexOf(b));
                         }
                     }
                 } else {
                     foreach(Box b in buttons){
                         GUI.backgroundColor = b.settings.backgroundColor;
                         GUI.contentColor = b.settings.textColor;
                         if(GUI.Button(b.rect,b.Content,b.style)){
                             if(OnBtn!=null) OnBtn(this,buttons.IndexOf(b));
                         }
                     }
                 }
             }
 
             if(useLayout && endLayout) EndLayout();
         }