export declare function toHex(x: any): string;
export declare function resolveColor(colorParam: string): {
    r?: undefined;
    g?: undefined;
    b?: undefined;
    a?: undefined;
    hex?: undefined;
} | {
    r: any;
    g: any;
    b: any;
    a: any;
    hex: string;
};
export declare function transformColor(color: any, a: any): string | undefined;
export declare function getBackgroundAccordingColor(color: any, fixedAngle?: number): {
    backgroundImage: string;
    background?: undefined;
} | {
    background: any;
    backgroundImage?: undefined;
} | undefined;
export declare function getMiddleColor(colors: any, offset: any): any;