Looking for Paint

The work in the basement is to the point where I need to get the paint color I want. who knew that this could be such a difficult decision. I know the basic color I am looking for. But do I paint the ceiling a different color? And what about the trim? So I am off to the home improvement store for color chips. We shall see what turns up. Some of the things we need to do for the basement are lots of fun. Others seem a little overwhelming. Like finding a sink I like.