Lowrance LMS 522C iGPS Question

[USDA3]

Sometimes I find it hard to see the depth contour lines on the maps of my LMS 522. I know I can change the water background color to white, but is it possible to change the colors of the contour lines??

thanks

[PerchJerker]

Put the unit in the night viewing mode, makes it MUCH easier to see the contour lines

[fishinalot]

Thats what I found the best, (night vision mode).