What’s the difference?

I purchased these from Michaels and the one in blue is always sold out but the other one is not even listed on the site but they have plenty in stock. Even the manufacturer code on the back is the same. Is there a difference?

I purchased these from Michaels and the one in blue is always sold out but the other one is not even listed on the site but they have plenty in stock. Even the manufacturer code on the back is the same. Is there a difference?