This paper presents a novel approach to creating user-interactive displays using multicolour stretchable perovskite electroluminescent (PeACEL) devices. The authors develop a rational material design strategy and a simple manufacturing process to create skin-conformable PeACEL devices that exhibit narrow emission bandwidths, tunable emission wavelengths, high stretchability, and adequate luminance. The key innovation is the use of a new class of perovskite zinc sulfide (PeZS) phosphors, which consist of ZnS phosphors coated with perovskite nanoparticles for electrical excitation via total intraparticle energy transfer. This approach results in pure red and green emissions, expanding the color gamut of powder-based ACEL devices by 250%. The PeACEL devices are integrated with wearable electronics, enabling applications in dynamic interactive displays and visual real-time temperature monitoring. These displays offer new opportunities in flexible electronics and have potential applications in artificial skins, robotics, and biomedical monitoring devices. The PeACEL devices demonstrate high color purity, brightness, flexibility, and stretchability, with ultrathin and extremely stretchable properties. They can be patterned and integrated with multifunctional electronics, making them suitable for smart electronic skin and soft robotics.This paper presents a novel approach to creating user-interactive displays using multicolour stretchable perovskite electroluminescent (PeACEL) devices. The authors develop a rational material design strategy and a simple manufacturing process to create skin-conformable PeACEL devices that exhibit narrow emission bandwidths, tunable emission wavelengths, high stretchability, and adequate luminance. The key innovation is the use of a new class of perovskite zinc sulfide (PeZS) phosphors, which consist of ZnS phosphors coated with perovskite nanoparticles for electrical excitation via total intraparticle energy transfer. This approach results in pure red and green emissions, expanding the color gamut of powder-based ACEL devices by 250%. The PeACEL devices are integrated with wearable electronics, enabling applications in dynamic interactive displays and visual real-time temperature monitoring. These displays offer new opportunities in flexible electronics and have potential applications in artificial skins, robotics, and biomedical monitoring devices. The PeACEL devices demonstrate high color purity, brightness, flexibility, and stretchability, with ultrathin and extremely stretchable properties. They can be patterned and integrated with multifunctional electronics, making them suitable for smart electronic skin and soft robotics.