Was watching this on HBO, and noticed that Jurnee Smollett wears navy keds in the episode. There is another episode "Holy Ghost" where you see her wearing them on the porch. Here is a really good sample picture
She's wearing modern Keds in a show that takes place in the 1950s. Even in the first pic, all the clothing has a modern cut with a vaguely 50s aesthetic. Jurnee's jeans would've have been cuffed at the bottom. Here's a pic of a company that makes retros 50s jeans. And here's an actual women from the 1950s. I guess I'm a stickler for this kind of stuff.