Worked on the ppy/osu repository to enhance the ArgonJudgmentCounter user interface, delivering a new ArgonJudgmentCounterDisplay component fully integrated with the HUD and theming system. Leveraging C# and the osu! Framework, the developer enabled customizable colors and wireframes, and introduced a dedicated visual test scene to validate display modes and user interactions. Addressed formatting and initialization issues to improve component robustness, while also stabilizing skin deserialization tests to reduce flaky test runs. This work improved UI consistency, expanded user customization options, and strengthened test reliability, supporting faster iteration and more predictable releases through targeted unit and visual testing practices.