loading greenzones into your gps/sounder

[schoondy]

Hi there just wondering if any one can tell me if it is possible to load in greenzones in a Lowrance Elite 5 Gps/sounder ?
I know it is possible to put in way pionts but i was wonering if it was possible to get a coloured green box showing on the sounder as the green Zone ?
Any info would be much apreciated