The possible mis-readings of that 'highway to the dangerzone' take my breath away (Xenu would not approve) :-O
Surely an inspirational movie for children with darker skin colour would be set in the present or the future?
Looking backwards always comes at the risk of nostalgia (literally a pain for the lost past) rather than pulling people forward.
That is one reason why I buy the claims of actors and astronauts which cite Star Trek's multi ethnic crew as being inspirational.
It might have showed a future where a black woman can aspire to being a glorified telephone operator who can kiss a white captain but it at least offered a future at a time when television was a bit thin on the ground about displaying a present for anyone other than a WASP.