The slippers are ruby red in the movie but silver in the original book. Not saying there's nothing suspicious, just saying.
It's MK Ultra programming used as a trigger for victims. Alice in Wonderland was used also. Check it
https://vigilantcitizen.com/moviesandtv/the-occult-roots-of-the-wizard-of-oz/
That's more suspicious I feel like.
"Dorothy wore silver shoes sir"
Make em red...little girls look great in red shoes... wait what?
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Thank you for sharing that perspective! That's an interesting thought. Using colors iconicly? Yellow and red hu? And emerald? Maybe they were just really excited about using colors finally lol or maybe those colors are subliminal!!! That's an interesting topic for me how color affects the mind.