I am new to the ATF series so I may be missing something really obvious here but what exactly is the difference supposed to be between the 'Contour' and 'Contour Over Colour' map views? They look exactly the same to my untutored eye i.e. Contours but no colours for elevation.
If they look the same to you, it is probably because your color depth is set to greater than 24 bit color. In order for contour-over-color to work correctly, you must have your display color depth set to 24 bit color or less.