The SA Welles kit is a keycap set inspired by the aesthetics of Film Noir, particularly reflecting the style of classic films like "LA Confidential" and works by Orson Welles. The design aims for an understated yet dramatic look, utilizing shades of grey, red, and warm beiges reminiscent of mid-century electronics. It features the SA keycap profile for a vintage appearance and quality sound, with a modern twist in its layout. The kit includes a base kit called "Concrete Blond," accommodating various keyboard layouts including 60-TKL, UK ISO, and Alice keyboards, and a numpad kit titled "99 River Street." The set is designed to resonate with fans of noir and pulp fiction, potentially expanding to include themed novelties in the future.