[pinksequins]

This is not USC (South Carolina - no Theta chapter) but probably a reinstatement of a chapter following a suspension or like period. That said, colonies provide the best opportunity not only for older new members (regardless of class standing) but also for "learning the ropes". OP, colonies are advised by carefully selected young alumnae (typically out of college a year or two) who spend the better part of the first year with a chapter because all colony members are learning the ropes. This helps ensure the success of the colony as well as a positive experience for the colony members. If you are shy, the individual interview process for colony membership also may work better for you. Lastly, legacy status is not assurance of selection by the legacy group.