The Mumbai Heritage Conservation Committee has demanded to know why the BMC has yet to switch white LED lights along Marine Drive to yellow ones, a recommendation the committee made in February.Following a complaint from Professor Avkash Jadhav, a nominated Shiv Sena corporator, the MHCC had written to the BMC asking it change the lighting scheme along Marine Drive.Jadhav has threatened to file suit if the city corporation fails to act.On a related note, the heritage panel, affronted by the BMC's action has sent the organisation a reminder. “We will ask the BMC what action they have taken and why no change has been made on the site in the lighting scheme.We also want to know the exact status of the BMC's project of LED lighting, as far as the heritage precinct of Marine Drive is concerned,“ V Ranganathan, Chairman, MHCC, told Mumbai Mirror.BMC officials said that the civic body had suggested to Energy Efficiency Services Ltd., the agency that installed white LEDs along Marine Drive, that they switching to the yellow ones that illuminated the stretch until early this year. Municipal Commissioner Ajoy Mehta submitted a written reply in the city corporation last week informing that his office was acting on the MHCC's recommendation that Marine Drive be lit by “golden or yellow lights“, in keeping with tradition ­ sodium vapour lamps were earlier installed along the 3-km-long avenue. Mirror has in a series of reports highlighted the arbitrary manner in which BMC changed the lights.Mehta was responding to a question by Jadhav. “The matter will be discussed at a high-level by EESL,“ Mehta wrote in his reply.Jadhav is not convinced. “EESL is the BMC's contractor. How can the BMC just request them? The BMC must make sure that the lights be changed as per the heritage panel's recommendation. The lights are already malfunctioning and complaints of dark patches are also increasing. If the MHCC can't get its own order enforced, then it must be dissolved,“ Jadhav said.The project, conceived as a means to shift to greener technology, became contentious when the BJP and Sena, which control the BMC, skirmished about the decision to install white LEDs on Marine Drive. Yuva Sena chief Aaditya Thackeray had tweeted against the project and claimed that BJP went ahead with it without consulting residents of the neighbourhood or BMC corporators. Marine Drive was recently notified by the state government as a designated heritage precinct and no changes can be made to the stretch without the MHCC's nod.With the BMC now demolishing Aaditya's open air gym on the same promenade and then re-installing it on Thursday, the Sena wants to make sure that it gets its way on the LED lights issue. “We will take legal recourse if the BMC fails to act. They must change the colour of the lights to yellow or replace the LEDs with the old sodium vapour lamps,“ Jadhav said. Sharat Chandra, EESL's Project Manager in Mumbai has maintained that the decision on changing the colour of the lights would be taken by the company's senior management. “We will send the letter to the Municipal Commissioner and seek clarity on the issue,“ Ranganathan said.