Why are green screens green? Why are tigers green?

Why are green screens green? Why are tigers orange? Why are orange and green the same color?
*CORRECTION*: video's lower caption for the tiger camouflage photo incorrectly attributes as being from Carvalho et al (2017), when it fact it was taken from Fennell et al. (2019). Professor László Tálas took the photo himself at the East Berlin Zoo. Upper video cards are correct. My apologies for the mistake.
Sources:
Kohlitz, "Why Aren’t There Mammals in Super Vivid Colours Like There Are Birds and Bugs?" (2021) gizmodo.com.au/2021/05/why-ar...
Carvalho et al. "The Genetic and Evolutionary Drives behind Primate Color Vision" (2017) www.frontiersin.org/articles/...
Fennell et al. "Optimizing colour for camouflage and visibility using deep learning: the effects of the environment and the observer's visual system" (2019) royalsocietypublishing.org/do...

[@stannicolae4623]

Loved the video. Felt like a viral video from the golden age of the internet

[@loodog555]

Hey, thanks!