Alibabavum 40 Thirudargalum (1956)
Alibabavum 40 Thirudargalum (read as "Alibabavum Narpadhu Thirudargalum"; ) is a 1956 Indian Tamil swashbuckling-adventure film directed and produced by T. R. Sundaram. The film stars M. G. Ramachandran and P. Bhanumathi in the lead roles, with P. S. Veerappa as the main antagonist and K. A. Thangavelu and M. G. Chakrapani in supporting roles. It is notably the first colour film made in Tamil language. The film tells the story of a poor woodcutter, whose fortune changes when he learns about a secret cave full of treasures, but he must keep his source of wealth as a secret, in order to lead a peaceful life.
More at Wikipedia.