During January 2026, Lily Oelbeck contributed to the TerraFirmaGreg-Team/Modpack-Modern repository by delivering the Brick Dye Color Expansion feature. She enhanced the game’s customization options by adding a gray dye to brick recipes and replacing the yellow dye, requiring updates to recipe logic and color requirements across all brick variants. This work involved JavaScript and game modding skills, focusing on maintainability and consistency within the recipe system. Lily collaborated via Git with another developer, aligning changes with issue tracking and co-authorship practices. The feature broadened player engagement by expanding cosmetic choices, demonstrating depth in mod development and collaborative engineering workflows.