Rollover-Color
This property allows you to set or retrieve the color of the Radio-Button control when the mouse pointer hovers over it. Foreground and background color values are combined and therefore RGB colors are not supported. See "Color management" for further details.
 
Example - Define a radio button with background and foreground color on mouseover
screen section.
...
  03 screen-1-rb-2 Radio-Button
     line 20.6
     column 21.7
     size 10.9 cells 
     lines 5.4 cells 
     color 133
     rollover-color 512
     id 5
     title "Option 2"
     .