Is a dark elf an evil elf?
No. In Ansalon, “dark elf” is a term used for elves who are outcasts from the elven societies of Qualinesti or Silvanesti. Many of them are evil, since being/practicing evil is a crime punished with exile (Dalamar being the most obvious example). Good elves may also be outcasts, since both elven societies (especially Silvanesti) are very conservative and exile elves for a number of reasons. Examples of good dark elves are Porthios and Alhana Starbreeze.