Green

I bought this series believing it to be only a touchy feely book. My son is 8 mths old so he sucks and pulls every thing. Unfortunatley, this series has flaps and tabs that such a little baby just ruins. Don't get me wrong I love these books. The covers are spongy ie the blue balloon is smooth, the red is material, the yellow fuzzy, the green canvas. Beware the blue has a feather in it which a baby can pull out. Do not leave these books with the littlies to read by themselves, it could be hazardous The books are too flimsy for babies. If you baby is older and knows how to treat a book when you read it, these books are terrific. I am saving them for later but I wish I had known the strength of the pages before.They are beautifully set out just not able to endure a tough life with very small people

My daughter got this book at a birthday party, and it quickly became her favorite. She can spend 10 minutes opening and closing the bug on the green frog page. While parts have finally given out, it seems to be sturdier than most books with paper flaps kids can manipulate. I don't know if it's making her understand her colors better, but it seems like having a single color in a book is a nice approach.