Hi northPOW
for my very first RC Plane, a Dynam Hawk Sky, I used the acrylic water based paint from Renovo, available at Hagebaumarkt. The color works very well with EPO but adds some weight too.
Simply choose a dark and a bright color (not blue) from the color palette that give a nice combination - they look awesome in the air and give a nice contrast to the blue sky and grey clouds.
My personal tipps for a nice result with using this colors:
You put it bountifully on the surface with a wide brush and roll it over with a funguid paint roller (recommended) immediately after because it drys very fast. The first layer of color should cover the surface very well. In case you are not happy with the cover of the first layer add a second layer of color when the first one is dry but do not use the brush for this second one anymore. Somehow the color does not like brushes and produces ugly color lumbs with more than one layer.
When dry the color gives a very nice looking smooth and sturdy surface. Bellylandings on dry earth with short grass should not be a problem too.