THE ROCKY HORROR PICTURE SHOW (1975) Rainbow flag (LGBT)

Well, I was walking down the street just a having a think when I thought about how according to Wikipedia the Rainbow Flag was created in 1978 by Gilbert Baker.  "Baker's first rainbow flag had eight colors, though the most common variant consists of six stripes: red, orange, yellow, green, blue, and violet. The flag is typically flown horizontally, with the red stripe on top, as it would be in a natural rainbow."  But, strangely enough, an upside-down rainbow (violet, blue, green, yellow, orange and red) is seen in a rectangular shape in THE ROCKY HORROR PICTURE SHOW which debuted on August 14, 1975.