Are these Seaweed Sheets ok?

I don’t remember what they looked like when I first opened them when I made sushi with them a week and a half ago, but I noticed this time that they look kinda brown/yellow. Google says that’s bad; that they have gone off or are going to. I just made some sushi for lunch tomorrow with them so I hope that’s not the case, but I don’t want to get sick either. They smelled ok in the package, flavor was pretty light though. The one picture is a sheet under my kitchen light to show you more clearly.