Owlowla Swaddle Blanket and Hat Set Newborn Swaddle Wrap Baby Receiving Blanket for Baby Boys Girls(Olive)

Do these blankets get stinky in the wash (because of material)?

What is the fabric of this swaddle? Will it make the baby overheat?

I have bought one swaddle and hat set for baby shower gift, it's soft and stretchy,will there be more colors in the future?

I’m confused, the dusty blue says steel blue too, which one is the color? Thanks