Worked on the AMReX-FHD/FHDeX repository to enhance particle visualization output for scientific simulations. Focused on improving the persistence of particle data in plotfiles and enabling color-based visualization by scalar field values, these changes addressed the need for more reproducible post-processing and clearer data interpretation. The implementation leveraged C++ and the AMReX framework, with attention to parallel computing and shell scripting for workflow integration. Emphasis was placed on code cleanliness and maintainability, ensuring that the new features integrated smoothly with existing systems. No major bugs were reported, reflecting a careful and methodical approach to feature development and code quality.