Sets the background color at the given column index in the receiver
to the color specified by the argument, or to the default system color for the item
if the argument is null.
@param index the column index
@param color the new color (or null)
@exception IllegalArgumentException <ul>
<li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
</ul>
@exception SWTException <ul>
<li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
<li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
</ul>
Sets the background color at the given column index in the receiver to the color specified by the argument, or to the default system color for the item if the argument is null.
@param index the column index @param color the new color (or null)
@exception IllegalArgumentException <ul> <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> </ul> @exception SWTException <ul> <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> </ul>
@since 3.0