Hello Kenny! I don't think that it is written in the passive voice because the passive voice would speak about "who" dressed her. It really is a sentence written in the past tense - "was dressed" indicates that it is past tense. I hope that helps! Past perfect tense wold be like this: "She was dressed in black and white after she had been told that it would look good". - one thing happened after another thing sometime in the past. So your sentence is in the simple past/past tense. I hope that helps!

Exactly "She was dressed" past simple passive voice. Otherwise, it'd be "She dressed in black" - Past simple active voice. The idea of passive uses the "be+done" structure. The form of the word "be" shows the tense. So, this is the state of being verb that Phillip mentioned. It's really just an equal sign.

Neither. Perfect = have. Past perfect = had. Passive = Subject + verb phrase ( by someone or something)... This clause, "She was dressed" CAN be passive but is not always passive. Ex, 'My daughter, she was dressed by her mother this morning.' It's simple past. I believe more specifically and in the world of Linguistics -someone correct me if I am wrong- your sentence is called a 'copular verb'. A verb that acts more like an equal sign. Instead of an action verb, it is a verb that describes a state or a quality. Hope this helps.