Foreground-Color
This property allows you to set or retrieve the foreground color of the Slider control. See "Color management" for further details.
 
Example - Define a slide-bar with foreground and background colors
screen section.
...
  03 screen-1-sl-1 Slider
     line 33.1
     column 12.8
     size 38.2 cells 
     lines 3.0 cells 
     background-color 6
     foreground-color 3
     id 9
     horizontal
     .