The BackgroundPartEnum type indicates parts of
  the control whose visual appearance can be changed through the 
Background
  property. 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. The BackgroundPartEnum type
  supports the following values:
 |  | Name | Value | Description |  | 
 |  | 
exHeaderFilterBarButton | 0
 | 
(reserved) Specifies the background color for the drop down filter bar button.
 |  | 
 |  | 
exFooterFilterBarButton | 1
 | 
(reserved) Specifies the background color for the closing button in the filter bar.
 |  | 
 |  | 
exCellButtonUp | 2
 | 
 Specifies the background color for the cell's button, when it is up.
 |  | 
 |  | 
exCellButtonDown | 3
 | 
 Specifies the background color for the cell's button, when it is down.
 |  | 
 |  | 
exDaysHeader | 6
 | 
 Specifies the visual appearance for the days header.
 |  | 
 |  | 
exWeeksHeader | 7
 | 
 Specifies the visual appearance for the weeks header.
 |  | 
 |  | 
exDateHeader | 8
 | 
 Specifies the visual appearance for the months header in a calendar control.
 |  | 
 |  | 
exDateTodayUp | 9
 | 
 Specifies the visual appearance for the today button in a calendar control, when it is up.
 |  | 
 |  | 
exDateTodayDown | 10
 | 
 Specifies the visual appearance for the today button in a calendar control, when it is down.
 |  | 
 |  | 
exDateSeparatorBar | 13
 | 
 Specifies the visual appearance for the separator bar in a calendar control.
 |  | 
 |  | 
exMarkToday | 14
 | 
 Returns or sets a value that indicates the visual appearance for today date.
 |  | 
 |  | 
exDateHeaderForeColor | 21
 | 
 Specifies the foreground color to show the months in the header.
 |  | 
 |  | 
exDaysHeaderForeColor | 28
 | 
 Specifies the foreground color for the days header.
 |  | 
 |  | 
exWeeksHeaderForeColor | 29
 | 
 Specifies the foreground color for the weeks header.
 |  | 
 |  | 
exMarkTodayForeColor | 30
 | 
 Specifies the foreground color for the today date.
 |  | 
 |  | 
exDateTodayForeColor | 31
 | 
 Specifies the foreground color for the Today button.
 |  | 
 |  | 
exToolTipAppearance | 64
 | 
 Specifies the visual appearance of the borders of the tooltips.
 |  | 
 |  | 
exToolTipBackColor | 65
 | 
 Specifies the tooltip's background color.
 |  | 
 |  | 
exToolTipForeColor | 66
 | 
 Specifies the tooltip's foreground color.
 |  | 
 |  | 
exCheckBoxState0 | 70
 | 
 Specifies the visual appearance for the check box in 0 state (unchecked). The CheckBoxWidth
  /  CheckBoxHeight property specifies
  the size of the check-box. 
 |  | 
 |  | 
exCheckBoxState1 | 71
 | 
 Specifies the visual appearance for the check box in 1 state (checked). The CheckBoxWidth
  /  CheckBoxHeight property specifies
  the size of the check-box.
 |  | 
 |  | 
exCheckBoxState2 | 72
 | 
 Specifies the visual appearance for the check box in 2 state (partial, not used). The CheckBoxWidth
  /  CheckBoxHeight property specifies
  the size of the check-box.
 |  | 
 |  | 
exRadioButtonState0 | 73
 | 
 Specifies the visual appearance for the radio button in 0 state (unchecked). The
 RadioButtonWidth
  / RadioButtonHeight property
  specifies the size of the radio-button. 
 |  | 
 |  | 
exRadioButtonState1 | 74
 | 
 Specifies the visual appearance for the radio button in 1 state (checked).
 |  | 
 |  | 
exTreeGlyphCollapsed | 84
 | 
Specifies the visual appearance to show the glyph next to the collapsed element.
 |  | 
 |  | 
exTreeGlyphExpanded | 85
 | 
 Specifies the visual appearance to show the glyph next to the expanded element.
 |  | 
 |  | 
exTreeLinesColor | 186
 | 
 Specifies the color to show the tree-lines (connecting lines from the parent to the children)
 |  |