I planted peppers for the first time this year. I used "pepper seeds"... no type listed. I have now realized that this may have been a mixed bag of types of seeds. Lesson learned.

Anyways, now I have some yellow peppers that look like wax possibly, some green that look like anaheim, some bell peppers and then these that have turned dark. Can you help me? Are these a type of pepper? Are they diseased? It got cold a couple of nights, could it be damaged by frost?

Thank you for any help/advice you may have!