Hum! I've never seen those before. I'm curious what they are like. I can't imagine they'd be the same. Quaker grits are white, but I do have some good southern grits that are yellow like that. Now I'm curious.
I usually get mine when people come from home, so I'm not much help. I have seen them in the odd imported American food corner, but usually just the instant packs that aren't as good, so I don't get them. I haven't really seen them in the mainstream here at all. The shop I've seen them in is closing, so I can't help there.