RIYADH, Saudi Arabia >> Green lipstick, blue lipstick and 40 shades of foundation to choose from are just some of the reasons 18-year-old Shahad al-Qahtani is excited about superstar Rihanna's makeup line debut in Saudi Arabia.Rihanna, known worldwide for her chart-topping songs and daring, provocative style, is wildly popular among the Saudi women coveting her new makeup line called "Fenty.