/**
 * Array of bright, contrasting colors for annotations.
 */
export declare const ANNOTATION_COLORS: string[];
/**
 * Get a color for an annotation based on its index.
 * Colors cycle through the palette.
 */
export declare const getAnnotationColor: (index: number) => string;
/**
 * Default annotation style values.
 */
export declare const DEFAULT_ANNOTATION_STYLE: {
    color: string;
    strokeWidth: number;
    strokeDasharray: string;
    fill: string;
    opacity: number;
    fillOpacity: number;
};
