The nickname for the top half of the third floor of Prospect House. The name arises from the new design scheme of a different color for each floor; the third floor has green tiles in the stairwells (those that are completed) and green east/west walls in the common rooms and hallways. Green Up is populated by very interesting people, including Colin Yee '06, without whom the average SAT score would be significantly higher. Daniel Klein '06 has also been observed on the premises in between visits to Your Mom.