NEWTON Eyeglasses by Etnia Barcelona. Color: OG Gold, BRRD Brown/Red, GMBL Gray/Blue, GRHV Green/Havana, Size: 49-21-145. The NEWTON frames reimagine the classic pantos style with a robust metal construction, offering durability alongside sophisticated style. Their dimensions make this model versatile and easily adaptable to a wide range of face shapes. Available in shades that range from earthy browns to sleek metallics, the NEWTON provides a modern yet retro-inspired feel, perfect for those who appreciate an artful blend of the old and the new.