“…Inspired by the unique structural color and the stimuli-responsive functions of some organisms in nature, such as chameleon, , neon tetra fish, , etc., colloidal photonic composites (CPCs) have drawn increasing attention in photonic materials. , CPCs are emerging photonic composites with correlated structures of colloidal particles (CPs) embedded in a polymeric matrix, showing distinct optical, mechanical, and responsive properties. , CPCs are of great importance in reflective colorful coatings, , colorimetric sensors, , anticounterfeiting, and more. − Optical and mechanical properties of CPCs strongly depend on the arrangement of the CPs within the polymeric matrix; therefore, it is essential to have precise control over their manufacturing process and the resulting colloidal structure. , When CPs are strongly correlated or long-range-ordered in the CPCs, the propagation of photons is completely prohibited in a certain frequency of light or photonic band gap (PBG), exhibiting angle-dependent reflective structural color . On the other hand, CPCs with amorphous or short-range-ordered colloidal structures show angle-independent structural colors due to the uniform single backscattering. , Since CPCs combine a unique colloidal arrangement with the polymer matrix, conventionally, the construction of CPCs necessitates multistep processes, i.e., infusion of polymers or monomers into a preformed colloidal arrangement or simultaneous assembly of CPs and monomers, followed by polymerization. ,− The complicated preparation process and/or implementation conditions hinder their large-scale production.…”