Name:   ScrollbarUnusedSpaceColor
Description:   Color of the unsused area in the corner that emerges if the horizontal and the vertical scrollbars are displayed at the same time, as well as the areas that arise by assignment of a margin value greater than 0
Default:   0xFFFFFF (white)
     
Example:   <PARAM NAME="ScrollbarUnusedSpaceColor" VALUE="0xFAFAFF">