Developed a major expansion to the cosmetics system in TheDenSS14/TheDen repository, introducing glowing and unshaded overlays for approximately 100 markings across multiple species, including Unathi, Human, and Thaven. The work involved end-to-end implementation of new content and shader programming, with enhancements to the rendering pipeline through a custom unshaded world shader to support advanced overlay and glow effects. JavaScript and YAML were used to deliver these features, accompanied by comprehensive documentation, media assets, and changelog updates. The process emphasized adherence to project guidelines, thorough testing, and clear commit traceability, supporting future iterations and cross-contributor collaboration.