Russian, Cyrillic Keyboard Overlay, Stickers, Labels. Red Characters, Transparent for Light Color Keyboards Graphic MAy Vary. Russian Red Overlays (red ink on clear overlay for beige or light colored keyboards) Overlays are manufactured of durable Lexan.They won't tear, crack, discolor, or slip off even after years of use. The Overlay adhesive firmly attaches the overlay in place without damaging the keyboard key or the original key legend. The adhesive will not ooze, harden or wear out. If desired, Overlays may be removed without causing damage to the original key or the legend on the key. All printing is on the reverse side of the overlay (i.e., underneath) so that the printing will not rub or scratch off in normal use.