This study presents a method for creating high-performance photonic crystals by optimizing the volume fraction of silica particles in photocurable dispersions and applying shear flow to align the colloidal crystals. The silica particles, which experience strong repulsion at high volume fractions, rearrange under shear to form larger, unidirectionally oriented crystalline domains. This results in high reflectivity (up to 90%) at the stopband and high transparency (up to 90%) at off-resonant wavelengths, with minimal diffusive scattering. The uniform volume fraction of particles ensures consistent optical properties. The photonic films and patterns can be stacked to produce multiple reflectance peaks and mixed structural colors without sacrificing reflectivity. The high crystallinity and uniform orientation of the crystals enhance structural resonance and reduce diffusive scattering, leading to superior optical performance. The study also demonstrates the ability to micropattern the photonic films using photolithography, enabling the creation of intricate and uniform photonic graphics. The high transparency of the structures allows for the stacking of multiple layers, resulting in multiple reflectance peaks and transmittance dips. These photonic crystals show promise for various optical applications, including optical filters, reflectors, and anticounterfeiting optical barcodes. The results highlight the importance of optimizing the volume fraction and shear conditions to achieve high optical performance and uniformity in photonic materials.This study presents a method for creating high-performance photonic crystals by optimizing the volume fraction of silica particles in photocurable dispersions and applying shear flow to align the colloidal crystals. The silica particles, which experience strong repulsion at high volume fractions, rearrange under shear to form larger, unidirectionally oriented crystalline domains. This results in high reflectivity (up to 90%) at the stopband and high transparency (up to 90%) at off-resonant wavelengths, with minimal diffusive scattering. The uniform volume fraction of particles ensures consistent optical properties. The photonic films and patterns can be stacked to produce multiple reflectance peaks and mixed structural colors without sacrificing reflectivity. The high crystallinity and uniform orientation of the crystals enhance structural resonance and reduce diffusive scattering, leading to superior optical performance. The study also demonstrates the ability to micropattern the photonic films using photolithography, enabling the creation of intricate and uniform photonic graphics. The high transparency of the structures allows for the stacking of multiple layers, resulting in multiple reflectance peaks and transmittance dips. These photonic crystals show promise for various optical applications, including optical filters, reflectors, and anticounterfeiting optical barcodes. The results highlight the importance of optimizing the volume fraction and shear conditions to achieve high optical performance and uniformity in photonic materials.