Conversation so far:
where does blue is the warmest color take place
Blue is the Warmest Colour takes place in France.
how long was the film Blue is the Warmest Colour in production
Production for Blue is the Warmest Colour began in March 2012 and lasted six months.
is the film Blue is the Warmest Colour based on a book
The premise of Blue Is the Warmest Colour is based on the 2010 graphic novel of the same name by Julie Maroh.

Question: who are the stars of the film
Self-contained rewrite: who are the stars of the film Blue is the Warmest Colour