I don't think Raleigh had much of an MTB range until 88, before that there were several levels of maverick none were purple and the early black/white mustang, with the Ozark and avanti in the lightweight range. In 88 things got more serious with the new mustang, maverick and maverick GT, then Memphis, montage and mirage. None were dark purple, the Memphis was lilac. Mirage went purple in 1990. That's where my knowledge ends.
Carl