Hello! I am new to fba and am looking into my product packaging. I have read some of the guidelines when it comes to packaging, and one of the requirements is that the poly bag is transparent. My question is, is it acceptable to use the opaque bagging that seems to be popular right now? I feel like most responses I have seen, result in a no. But I have, especially recently, been ordering more products on Amazon to check out the packaging, and at least half are using this opaque bagging. I am just a little confused. How strict is the "transparency" rule. And if it is a rule, how are these other sellers, selling their product in this packaging?

Example photo for reference