BUTTON_THEME: {
    readonly default: "\u30C7\u30D5\u30A9\u30EB\u30C8";
    readonly primary: "\u30D7\u30E9\u30A4\u30DE\u30EA\u30FC";
    readonly secondary: "\u30BB\u30AB\u30F3\u30C0\u30EA\u30FC";
    readonly success: "\u30B5\u30AF\u30BB\u30B9";
    readonly warning: "\u30EF\u30FC\u30CB\u30F3\u30B0";
    readonly alert: "\u30A2\u30E9\u30FC\u30C8";
    readonly info: "\u30A4\u30F3\u30D5\u30A9";
    readonly neutral: "\u30CB\u30E5\u30FC\u30C8\u30E9\u30EB";
    readonly transparent: "\u80CC\u666F\u306A\u3057";
}