Fluorescent light tube covers are clear or tinted mylar sleeves that fit over straight standard-sized fluorescent bulbs. The tube covers may be used to help darken the bulbs to lessen the intensity of the brightness of the light, and may mask the contrast between the light and the dark during the flickering of the lights. The tough mylar film sleeve protects the bulb and adds a safety factor as well. The fluorescent light covers can be cut easily with scissors to fit smaller sizes or be combined to fit larger ones. The fluorescent light covers are reusable and outlast many bulb changes.