Detail Flix | Rare facts & Curiosities on Instagram: "The earliest form of green screen arrived in 1940 when filmmaker Larry Butler developed a blue screen process for The Thief of Bagdad. His work earned an Academy Award and became the foundation for modern chroma key technology. At the time, blue was easier to work with because film cameras captured it cleanly, which made it ideal for separating actors from backgrounds. Green screens became common later, around the 1970s and 1980s, when digita