property Tree.BackColorSortBarCaption as Color
Returns or sets a value that indicates the caption's background color in the control's sort bar.

TypeDescription
Color A color expression that indicates the caption's background color in the control's sort bar. The last 7 bits in the high significant byte of the color to indicates the identifier of the skin being used. Use the Add method to add new skins to the control. If you need to remove the skin appearance from a part of the control you need to reset the last 7 bits in the high significant byte of the color being applied to the background's part.
Use the SortBarCaption property to specify the caption of the sort bar, when the control's sort bar contains no columns. Use the BackColorSortBar property to specify the background color of the control's sort bar. Use the ForeColorSortBar property to specify the foreground color of the caption in the control's sort bar.

The following VB sample changes the appearance for the control's sort bar. The sample uses the "" skin. 

With Tree1
    .SortBarVisible = True
    With .VisualAppearance
        .Add &H60, App.Path + "\sortbar.ebn"
    End With
    .ForeColorSortBar = 0
    .BackColorSortBar = &H60000000
    .BackColorSortBarCaption = .BackColorSortBar
End With

The following C++ sample changes the appearance for the control's sort bar:

#include "Appearance.h"
m_tree.GetVisualAppearance().Add( 0x60, COleVariant(_T("D:\\Temp\\ExTree.Help\\sortbar.ebn")) );
m_tree.SetSortBarVisible( TRUE );
m_tree.SetBackColorSortBar( 0x60000000 );
m_tree.SetBackColorSortBarCaption( m_tree.GetBackColorSortBar() );

The following VB.NET sample changes the appearance for the control's sort bar:

With AxTree1
    .SortBarVisible = True
    With .VisualAppearance
        .Add(&H60, "D:\Temp\ExTree.Help\sortbar.ebn")
    End With
    .Template = "BackColorSortBar = 1610612736"
    .Template = "BackColorSortBarCaption = 1610612736"
    .ForeColorSortBar = Color.Black
End With

The following C# sample changes the appearance for the control's sort bar:

axTree1.VisualAppearance.Add(0x60, "D:\\Temp\\ExTree.Help\\sortbar.ebn");
axTree1.SortBarVisible = true;
axTree1.Template = "BackColorSortBar = 1610612736";
axTree1.Template = "BackColorSortBarCaption = 1610612736";
axTree1.ForeColorSortBar = Color.Black;

The following VFP sample changes the appearance for the control's sort bar

With thisform.Tree1
    With .VisualAppearance
        .Add(96, "D:\Temp\ExTree.Help\sortbar.ebn")
    EndWith
    .SortBarVisible =.t.
    .BackColorSortBar = 1610612736
    .BackColorSortBarCaption = .BackColorSortBar
    .ForeColorSortBar = 0
EndWith