Tangerine was in an Excalibur storyline set in the Days Of Future Past timeline. Issues 66 and 67. She had a great look. A big orange 'fro and green John Lennon glasses.
A telepath capable of scanning emotions, sensing enemies approaching, psychometry, and generating bio-electrical blasts to fry someone's mind psionically. It appears she lacked defensive powers, relying on her allies to protect her in battle. She survived the battle in the Hive.
Unfortunately, I couldn't find a pic that showed her kickass bell bottoms and I don't have a scanner. Sad face!