How to customize the arrow border color in MetroScrollbar?

//Metro colors
MetroColorTable style = GridsScrollbarsStyle();
//Enable metro scroll bars
gridControl1.MetroScrollBars = true;
//Setting Metro colors for MetroScrollBar
gridControl1.MetroColorTable = style;
 
private MetroColorTable GridsScrollbarsStyle()
 {
     var scrollStyle = new MetroColorTable
     {
         ScrollerBackground = Color.FromArgb(2,182,161),
         // Arrow background
         ArrowNormalBackGround = Color.WhiteSmoke,
         //To set the arrow border
         ArrowNormalBorderColor = Color.Red,
         ArrowPushedBorderColor = Color.FromArgb(171, 171, 171),
         ArrowCheckedBorderColor = Color.FromArgb(171, 171, 171),
         ArrowPushedBackGround = Color.FromArgb(34, 34, 34),
         ArrowPushed = Color.FromArgb(104, 104, 104),
         ArrowNormal = Color.Green,
         ArrowChecked = Color.FromArgb(80, 80, 80),
         ArrowInActive = Color.FromArgb(104, 104, 104),
         
     };
     return scrollStyle;
 }

'Metro colors
Dim style As MetroColorTable = GridsScrollbarsStyle()
'Enable metro scroll bars
gridControl1.MetroScrollBars = True
'Setting Metro colors for MetroScrollBar
gridControl1.MetroColorTable = style
 
Private Function GridsScrollbarsStyle() As MetroColorTable
     Dim scrollStyle = New MetroColorTable With
         {
         .ScrollerBackground = Color.FromArgb(2, 182, 161),
         .ArrowNormalBackGround = Color.WhiteSmoke,
         .ArrowNormalBorderColor = Color.Red,
         .ArrowPushedBorderColor = Color.FromArgb(171, 171, 171),
         .ArrowCheckedBorderColor = Color.FromArgb(171, 171, 171),
         .ArrowPushedBackGround = Color.FromArgb(34, 34, 34),
         .ArrowPushed = Color.FromArgb(104, 104, 104),
         .ArrowNormal = Color.Green,
         .ArrowChecked = Color.FromArgb(80, 80, 80),
         .ArrowInActive = Color.FromArgb(104, 104, 104),         
     }
 
     Return scrollStyle
 End Function