Foreground-Color
This property allows you to set or retrieve the foreground color of the Scroll-Bar control. See "Color management" for further details.
 
Example - Define a scroll-bar with background and foreground color
screen section.
...
  03 screen-1-sb-1 Scroll-Bar
     line 4.0
     column 41.5
     size 2.9 cells 
     lines 39.7 cells 
     background-color 14
     foreground-color 4
     id 5
     .