They come in a rainbow of colors: red, orange, yellow, green, white, and purple, and are used not only because they add a colorful note to dishes but a very spicy one as well. Native to the western slopes of the Andes and named after Lima, the capital city in Peru, Aji Limo chile peppers are considered to be very spicy ranging 30,000-50,000 SHU on the Scoville scale!