I had always heard you needed to paint houses neutral colors in order to sell them. But I am not a believer in this anymore. Basically, because my experience opened me up to colors I never would have dared to use myself, but loved them when I saw them.
When I first visited my current house (it didn't have interior pics online), nearly every room was painted a bright color - the kitchen was bright and pale yellow on opposite walls, the great room was a grassy green color, one bedroom was bright blue, another bedroom (the teenage daughter's) was fuscia on the bottom and bright orange on the top, and the master bedroom was beige. I instantly knew I'd have to paint the fuschia/orange room (it was hideous!) but I actually loved all the other colors. The yellow kitchen was so bright and sunny, I'd never seen a green room before but thought it was beautiful, and I had a lot of blue-toned art so the blue room made a great office. Two years later, the only rooms I've painted are the ugly room (its now a grayish bluish lavendarish color called "solitude") and the bedroom, which I painted a dark red (the name I can't recall, but was wine-related), mainly because I'd always wanted a dark room and this room was huge enough I could finally do it without making the room look too small.
So I say paint away. If you decide to sell the house later, I don't see why potential buyers would pass up a house just because it has colors they may not like, because that way they can always paint the exact colors they want.