Color contacts help you change the color of your eyes. There are various types available where enhancement tint circle lenses aim at accentuating your original eye color than actually alter your natural beauty. Sweety BT Aqua circle lenses are the best example of enhancement tint lenses. They beautifully add an extra oomph to your naturally blue eyes. As a result your eyes are more vivacious, brighter & full of life. Against dark colored eyes, they may be very opaque but contrary to how they appear over dark eyes, these lenses look very soft & natural when worn over light eyes. Sweety BT Aqua comes with 14.5mm diameter that keeps the enlargement effect very natural and kinda subdued.