Worked on stabilizing chart theming within the wix/cli-app-templates repository, focusing on resolving a critical issue with color selection propagation in chart components. Addressed a bug where color changes made through the selectColor callback were not consistently reflected in both the chart state and user interface, leading to improved visual consistency and reliability. Utilized React and TypeScript to ensure that updates to color selections are accurately synchronized across UI controls and chart rendering. This work enhanced the maintainability of chart theming, reduced the risk of user-facing inconsistencies, and lowered support overhead for template deployments by improving state management and traceability.