Is this good hay for chinchilla?

Hi, I have a five month chinchilla. In our local pet store there is a mountain grass hay they sell for chinchillas (photo attached).

Is hay supposed to look like this?(Dry, yellow)

I am looking through the hays people recommend and it seems to me they’re green so I am unsure if this is a good hay for my chincilla or should I find a fresh, green one?

Thanks!