By Sandi Masori Sandi Masori CARLSBAD, California — If all you knew walking into the New Village Arts theater was that the program cover was brightly colored, that the show is a musical, and that the name of the show is Fun Home, you might think that you’re in for a lighthearted romp. And as the show opens, with a seemingly whimsical musical number, it does seem that way. We’re first presented with what appears to be the perfect family. But quickly we learn that they are anything but. Tony award-winning Jewish playwright Lisa Kron uses a clever narrative device in which the main character Alis…