Sweet peppers range in color from green to yellow, orange, red, purple, and black. Red bell peppers are fully ripened green bell peppers, with a milder, sweeter flavor. Other peppers include the red, heart-shaped pimiento; the pale green, slender and curved bull’s horn; the long, tapered Cubanelle, which ranges in color from yellow to red; and the sweet banana pepper, which is yellow and banana-shaped.