Gradient-Color-1
This property allows you to set or retrieve the start color of the gradient effect of the Frame 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 is not applied if either the Fill-Color property or the Fill-Color2 property is set.
If the Fill-Percent property is set, then the gradient effect is applied only on the portion indicated by this property.
See "Color management" for further details.
 
Example - Define a frame control whose background color goes from gray to white
screen section.
...
  03 screen-1-fr-1 Frame
     line 17.7
     column 20.0
     size 24.3 cells 
     lines 27.8 cells 
     gradient-color-1 rgb x#c0c0c0
     gradient-color-2 rgb x#ffffff
     gradient-orientation gradient-northeast-to-southwest
     id 16
     .
...