The film, "not a musical film" but featuring "a lot of music" according to Paco León,[1] follows thecoming-of-age story of a teenager with an extraordinary musical talent (Dora) leaving home alongside her dogToto upon a quarrel with her father Diego, embarking on a journey to 'Ciudad Capital'.[2][3][4]
Rainbow is inspired onL. Frank Baum'sThe Wonderful Wizard of Oz.[10]Paco León co-wrote the screenplay alongsideJavier Gullón,[11] and is also credited as producer.[12] Produced byTelecinco Cinema in collaboration with Los amigos de Dorothy AIE, and the participation of Andy Joke and Colosé Producciones,[10] filming began on 2 August 2021.[13] Shooting locations included theMadrid region and the provinces ofSegovia,Guadalajara,Toledo andAlicante.[14][15] Netflix reported the wrap in October 2021.[16] Other crew duties were entrusted to Marc Miró (cinematography), and Ana Álvarez-Ossorio (editing), whereas Diego Postigo helmed the coordination of the musical production.[17]
Fernando Bernal ofCinemanía rated the film 1 out of 5 stars, writing that León's "road movie never manages to pick up speed" and its sequences "falter within their own rhythm".[22]
Elsa Fernández-Santos ofEl País wrote about a film "capable of both the best and the worst", featuring an awry catharsis somewhat amended by a beautiful epilogue, resulting into an "uneven and largely botched film", even if having the courage to look to the future".[23]
Raquel Hernández Luján ofHobbyConsolas scored 40 out of 100 points ("bad"), deeming it to be an "immature and pretentious" proposal, with "clumsy" metaphors, and a final party that ends up becoming "irritating".[24]
John Serba ofDecider.com considered that the film "boasts enough compelling and creative pieces and parts to merit a recommendation, even if they don't quite come together as a whole".[25]