most of the painted interiors iv seen I dont like because it seems to just not look right, but if you do it right and do your color scheeme so that it matches I bet it will turn out good. just a little advice though - 1. consult a girl (not trying to be sexist) with your color scheme first because although we think we know what matches, we usually dont (iv seem many on this board which looked alright becuase im a guy but there was just something wrong which I could not point out, but im sure a girl could)
2. just take your time and be carefull. iv never done this before but from other past experinces I know that paint is a bitch to fix and even if you think there is no way that things can look worse you will find out they still can if you mess things up.