During February 2025, Nursultan Renat Uulu enhanced the ealmaz/DesignChili2 repository by developing a theming feature for the ExpandableCardItemView component. He introduced a new property and corresponding XML attribute that allows per-item customization of the title color, enabling more flexible UI theming and improved brand consistency without requiring code changes. This work leveraged his skills in Android development, UI development, and Kotlin, focusing on custom view implementation and XML-driven configuration. While no major bugs were addressed during this period, the feature delivered a maintainable solution that streamlines theming across card items and supports scalable design updates within the application.