You are an archaeologist working on a dig. When you find a thick pane of glass, you dust the dirt away, and see the inside of a massive bio-dome, hidden for too long. Only one organism is inside, and it was meant to be forgotten.
this could be a great creepy story, but actually If red completely disappeared there would be no more orange, purple, pink, etc. Your skin would look different and anything else that contains a variant of red