I came up with this<br><br>(define turn-off-red (lambda(traffic-light)<br> (overlay/xy (overlay/xy LIGHT-FRAME 0 0 traffic-light) 0 (- OFFSET) (circle RADIUS 'solid 'white)) ))<br><br>(turn-off-red (overlay/xy (overlay/xy (overlay/xy LIGHT-FRAME 0 OFFSET GREEN )<br>
0 0 (circle RADIUS 'outline 'white))<br> 0 (- OFFSET) RED ))<br>(define traffic-light (overlay/xy (overlay/xy (overlay/xy LIGHT-FRAME 0 OFFSET GREEN )<br> 0 0 (circle RADIUS 'outline 'white))<br>
0 (- OFFSET) RED ))<br><br>traffic-light<br><br>(turn-off-red ALL-THREE-ON)<br><br>ALL-THREE-ON<br><br>I think i got this now.<br><br>Aditya<br><br><br>