What kind of chroma key screen was used in filming of Avatar?

In the filming of "Avatar," a combination of advanced motion capture technology and a specialized blue screen was used, rather than the traditional green screen. The blue screens allowed for better contrast against the characters' skin tones, particularly for the Na'vi, who are predominantly blue. Additionally, the filmmakers utilized high-tech LED screens for real-time background projections, enhancing the immersive experience during filming. This innovative approach contributed significantly to the film's groundbreaking visual effects.