import type * as Options from "@/options/theme";
export declare class Theme {
    readonly fontFamily?: string;
    readonly primaryTextColor?: string;
    readonly secondaryTextColor?: string;
    readonly successColor?: string;
    readonly errorColor?: string;
    readonly primaryBackgroundColor?: string;
    readonly secondaryBackgroundColor?: string;
    constructor(theme?: Options.Theme);
    apply(document: Document): void;
    private setProperty;
}