Somewhere I Have Never Travelled (2009)

帶我去遠方

aka Saint Teresa of the Andes

Color blind girl A-Kuei feels alienated and misunderstood. She is raised by her grandmother who would rather believe she is possessed than hear her feelings. The only person in the village who understands her is her bookworm cousin A-Hsien. He tells her that there is an island far away in the South Pacific where everyone is also color blind due to a genetic mutation.