During December 2025, Plasternella focused on enhancing the Last.fm user interface within the catppuccin/userstyles repository. They consolidated header background opacity to ensure profile consistency and adjusted the color and background gradient of library bars to improve text readability. Using CSS and LESS, Plasternella addressed visual inconsistencies and accessibility concerns, resulting in a more cohesive and user-friendly experience across profile and library views. Their work demonstrated a solid understanding of front end development principles, with targeted styling updates that reduced visual defects. The depth of these changes reflects careful attention to design system alignment and practical UI theming skills.