AADA81 said: "I will add, I've never quite gotten the R&H reputation for happy, idyllic, family-friendly shows because most of their work has dark undercurrents and discomfiting themes, including Oklahoma!.There's so much more to them than "A Cock-Eyed Optimist" and "Climb Ev'ry Mountain"."
It's Sound of Music. Thanks to that show, specifically "Do-Re-Mi" and "My Favorite Things," Sound of Music became the backbone of children's introduction to musicals, alongside Disney.
As for the "color-conscious" vs. "color-blind" debate, I think it's a semantics change that also carries a little more weight. A show like Carousel would be color-blind, because any changes to the race of specific characters are more for the appearance of diversity, even if (in the case of Joshua Henry as Billy Bigelow) there are unintended consequences to particular decisions. (Although, I heard his Soliloquy on Sirius XM today and it still holds up - if the rest of the cast had been more diverse, his casting would've worked really well). Shows like Ragtime, Parade, and The Scottsboro Boys are color-conscious because they specifically deal with racial issues and make a point of it with their casting decisions. Ragtime wouldn't work if Coalhouse Walker, Jr. wasn't played by a black man; neither would it work if Tateh wasn't played by a white man.
An interesting point of discussion is shows like Hadestown, Hamilton, and Great Comet: shows where the race of characters doesn't really matter for the plot of the story, but the casting directors specifically try to diversify the cast. They wouldn't be "color-conscious," because they don't specifically deal with racial issues; however, they wouldn't be "color-blind," because the actors' race can make a difference in the minds of audience-goers (just ask Okieriete Onaodowan and Mandy Patinkin).
"I think that when a movie says it was 'based on a true story,' oh, it happened - just with uglier people." - Peanut Walker, Shucked