7G Rainbow Colony, which saw him collaborate with Yuvan Shankar Raja and Arvind Krishna again. He revealed that the film's inspiration came from his college days when he had been fascinated with a Punjabi girl called Ruchika, during his education in KK Nagar. He based several of the scenes on real-life happenings with his friends, revealing that the film was "75% biographical" and the lead character was an "average guy" like himself, who "no one would make a film on". He cast Ravi Krishna, son of the film's producer A. M. Rathnam, in the leading role after a successful screen test while choosing to retain Sonia Agarwal as the lead actress, due to her Punjabi origin. The film opened in October 2004 to positive reviews, with a critic from Sify.com noting: "Unlike other contemporary film-makers running after superstars and making formula films, Selvaraghavan pushes the cinematic envelope and brings savvy freshness to the form, hitherto unexplored". Another reviewer from Rediff.com added: "Selvaraghavan has once again displayed his skill making a movie that is touching without being mushy, and believable because of its realism", noting that "7G Rainbow Colony remains with you, disturbs you and lingers like the glowing embers of a fire long burnt." Consequently, the film and its dubbed Telugu version went on to become amongst the most profitable films of the year. Selvaraghavan later committed to begin work on a Hindi version of the film starring Vivek Oberoi in 2007, but the venture subsequently did not materialise. While making 7G Rainbow Colony, Selvaraghavan began pre-production work on a gangster film titled Pudhupettai – unrelated to his later film – and planned to cast Suriya, Dhanush, Silambarasan, Jayam Ravi, Ravi Krishna and Genelia D'Souza in the lead roles. The film however did not develop into production. 2004–2007 In 2004, he began pre-production on another gangster film titled Kasimedu for producer Salem A. Chandrasekharan, which would feature Ajith Kumar, Dhanush and Bharath in the leading roles. The film was later cancelled, and the director became involved in a legal tussle in 2010 for failing to return his advance payments for the project. He later also tried to make the film during 2005 with Vijay in the lead role for producer Ramesh Babu, with the producer again bringing up legal proceedings in late 2016 about the failure to return an advance. Likewise, another project titled Doctors featuring Dhanush and Sonia Agarwal