Chart Annotation Color

The color on a ChartAnnotation allows compliance staff to use a visual coding convention for different types of site events. For example, remediation milestones might use green markers, regulatory actions red, and sampling anomalies yellow. When multiple ChartAnnotations appear on the same trend chart, color differentiation helps viewers quickly identify the type of event without reading each label. Combined with the category field, a consistent color scheme across all sites makes compliance dashboards easier to interpret at a glance during regulatory review sessions.