Garret Wyman developed Slack alert color customization features for the grafana/alerting and grafana/grafana repositories, enabling dynamic color assignment to Slack notifications based on alert status. He integrated the Slack API and enhanced backend logic in Go to support configurable color options, ensuring that firing and resolved alerts are visually distinct in Slack channels. Garret updated the Slack integration structure and documentation, aligning color semantics across alerting and notification paths for consistency. His work improved incident visibility and operator response by providing clearer visual cues, demonstrating skills in API integration, backend development, and configuration management within a cross-repository context.