The reason why the room was pink was because on black and white film, hues of red become dark shades of black. Pink is the perfect balance to give it that dark creepy grey.
I want a Sharkboy and Lavagirl remake where the CGI is insanely good and the acting is super emotional and intriguing, but nothing about the story changes. Sharkboy still has to sing the dream song and mister Electricidad still has to go “YOU ARE IN MY CLASS!!! NOT THE OTHER WAY AROUND”