import { ChartModel } from './chart.model';
/**
 * Number chart model definition
 */
export declare class NumberChartModel extends ChartModel {
    /**
     * Background color for each data item card
     */
    backgroundColor?: string;
    /**
     * Background color for each data item card, when data is not defined (empty)
     */
    emptyBackgroundColor?: string;
    /**
     * Text color for each data item card
     */
    textColor?: string;
    /** @hidden */
    constructor(values?: Object);
}