I don't see a huge problem either. I think they would be safe to use. If you are concerned about one battery looking "different" to you, well if you have any single battery mods you could use that one in that, and pair the others. But, I don't see any sort of safety issue, perhaps it's possible they came from different batches but the batteries look okay to me, I'd think you could use them paired and etc.
But overall, it's your body, pics are different from seeing it in person. If you are truly troubled, perhaps contacting the manufacturer and explaining the differences you see might be reassuring, or they may be willing to send a replacement. Nothing to lose there but the bottom line is, these are your hands and face we are talking about, so if you are uncomfortable, well, you could certainly decide not to use it.. If I feel discomfort toward any of my batteries, I take them out of rotation, or rewrap, or do what's needed.
So, I think that truly you should be guided by your own concerns.
Anna