I haven't seen the films for years.
I always found them fascinating, the way he connects the ideals of Liberty, Equality and Fraternity (Blue, White and Red, respectively), always seen as a social and political concept, to a personal human experience.
And it's still such a pleasant shock to hear Polish being spoken in a French film.
In Blue, it is the personal liberation of Julie through the grief of loosing her husband and daughter. But not to say that liberty is always a good thing, she is free, after the accident that kills her family, she lives alone and doesn't keep in touch with anyone from her former life. The film has a constant beautiful melancholy about it. And the re-appearing colour, blue, in the lighting, the cinematography... its just magical. And, the gorgeous score composed by Zbigniew Preisner.
Plus, Juliette Binoche is pretty magical in her own right...