Yep, that is granny smith - apple green. We were sitting in the local "Tijuanna Flats" and my wife saw the ceiling color and said, "what about that color?" I let her make the decisions about the bus. Its our next home and anything can be changed so why not. We put a sample strip next to the curtain color and it is not bad. The curtains will be burgundy color. The floors will be wood grain single sheet vinyl unless we find something better. That way, it is easy clean up and area rugs will separate room areas.
If the green is too much and you find that you can't live with it, you can sponge another colour on top of it (like yellow or white). Unlike what many indicate, you can sponge paint oil based paint. It's just a sticky mess and you REALLY need to wear gloves and long sleeved shirts to keep the stuff off your skin.