BLUSTN VARIG 18X18 EE IN/OUT 18 x 18 Variegated Bluestone In/Out Corner Coping Thermal Eased Edge can be very versatile and can be ordered in a variety of widths, thicknesses and surface textures. Typically comes in a blue-gray color but it is also available in a variety of colors that includes more earthy tones. This type of coping comes with a thermal top and thermal edging.