Two days after Prince's death aged 57 last Thursday, the installation by Random International was transformed into an homage to Purple Rain by adapting the usually white lighting that shines through the falling water.
"It was humbling to be able to express our own sorrow so directly, thanks to LACMA," Random International told Dezeen. "That seems to have resonated with the public. The feedback was very nice."
Purple Rain was the title track on Prince's 1984 album, which was also the soundtrack to a movie of the same name.
The colour purple since became synonymous with the artist, and many of the illustrations created in the wake of his death were based around the hue.
First designed in 2012, the Rain Room allows visitors to play in the rain without getting wet.
Water falls in a continuous shower from the ceiling, but sensors are able to detect visitors and turn off the downpour wherever they are standing.
It has now temporarily ended its run at the museum, and is set to reopen on 19 May 2016 after conservation work on the museum has taken place.
Following Prince's death, Dezeen spoke to the designer of the symbol he famously used instead of a name. Mitch Monson described the musician as "the Nike swoosh before Nike was", and explained the story behind the iconic logo.
Random International has also commented on Prince's creative legacy: "Far beyond providing a soundtrack to life across generations, Prince established new possibilities for creativity, both in terms of the conception and the delivery of his work."
"In his devotion and commitment to breaking new ground, he created more than music," the studio added. "Whatever happens with his estate and the rumoured trove of unpublished material, his legacy is assured."