property Slider.BackColor as Color
Specifies the control's background color.

TypeDescription
Color A Color expression that indicates the 
Use the BackColor property to specify the control's background color. This property does not affect the visual appearance of the control applied using the Background property. Use the Picture property to assign a picture on the control's background. Use the ForeColor property to specify the control's foreground color. The Caption property assigns a text on any part of the control.