It also has chemicals in it that help brighten colors. Lights may be used to brighten dark areas of the pizzeria. The expansive window was designed to let light brighten the room during the late afternoon. Demba hoped that his cockney accent and his "lovely smile" would brighten Scott up. The existing lighting will be removed, and new contemporary sconces will brighten the common areas. Iron mordants "sadden" colors, while alum and tin mordants brighten colors. The beds were all replaced and new interiors introduced to help brighten up interiors. New colour-changing LED lights were installed to brighten up the building at night. More than 230 varieties of orchids and other tropical flowers brighten the landscape. Rebecca's liveliness and curiosity brighten Jane's life and refresh her spirit. Cleopatra is reputed to have used it to brighten the whites of her eyes. Two square windows were carved between the doorways to brighten the interiors. The entertainers can brighten the moods of the populace, leading to increased tax revenue. Her imagination and talkativeness soon brighten up Green Gables. It means "to brighten, to clear up".