Gradient-Color-1
This property allows you to set or retrieve the start color of the gradient effect of the Scroll-Pane control.
If this property is not set, but Gradient-Color-2 is set, then the start color of the gradient effect is black.
The gradient effect overrides the color set by Background-Color.
See "Color management" for further details.
 
Example - Define a scroll pane whose background color goes from gray to white
screen section.
...
  03 screen-1-sp-1 Scroll-pane
     line 33.1
     column 12.8
     size 38.2 cells 
     lines 3.0 cells 
     gradient-color-1 rgb x#c0c0c0
     gradient-color-2 rgb x#ffffff
     gradient-orientation gradient-northeast-to-southwest
     .