Liam is starting to understand

So, I've been talking with Liam a lot about different colors of skin. We got a bunch of books from the library like The Colors of Us and Please, Baby, Please. Liam loves these books. We asked him if he wanted a new brother or sister and he said 'yes'. I asked him if he wanted a brown baby and again he said, 'yes'. So yesterday we had a couple from church over for dinner. They didn't know yet we were adopting and Dave asked Liam, "Do you want a new brother or sister?" And he responded with a huge smile and said, "A brown Baby!" He ran and found his Please, Baby, Please book and showed the couple the baby on the cover and said, "That's a brown baby!"

It was so cute! I think he's really understanding and excited! He can quote the whole book and we've only had it a couple days.
My camera died so I couldn't get him reading the whole book but you can catch him saying, "Not on your head", "Keep off the wall", "Share that ball" "Don't be so slow"