diff --git a/js-script/captcha.js b/js-script/captcha.js
index e632cf4..65afcf1 100644
--- a/js-script/captcha.js
+++ b/js-script/captcha.js
@@ -138,7 +138,7 @@ class Captcha {
             if (option.rotate && option.rotate > 0) {
                 this._ctx.rotate((0, util_1.getRandom)(-option.rotate, option.rotate) * Math.PI / 180);
             }
-            if (option.colors && ((_a = option.colors) === null || _a === void 0 ? void 0 : _a.length) > 2) {
+            if (option.colors && ((_a = option.colors) === null || _a === void 0 ? void 0 : _a.length) >= 2) {
                 this._ctx.fillStyle = option.colors[(0, util_1.getRandom)(option.colors.length - 1)];
             }
             this._ctx.fillText(option.text[n], 0, 0);
diff --git a/js-script/index.d.ts b/js-script/index.d.ts
index f81c149..0724cbf 100644
--- a/js-script/index.d.ts
+++ b/js-script/index.d.ts
@@ -2,4 +2,3 @@ export { createCaptcha, createCaptchaSync } from "./extra";
 export { loadImage as resolveImage } from "skia-canvas";
 export { Captcha } from "./captcha";
 export { CaptchaGenerator } from "./CaptchaGenerator";
-export declare const version: string;
diff --git a/js-script/index.js b/js-script/index.js
index b8df6f4..ddc28cb 100644
--- a/js-script/index.js
+++ b/js-script/index.js
@@ -1,6 +1,6 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.version = exports.CaptchaGenerator = exports.Captcha = exports.resolveImage = exports.createCaptchaSync = exports.createCaptcha = void 0;
+exports.CaptchaGenerator = exports.Captcha = exports.resolveImage = exports.createCaptchaSync = exports.createCaptcha = void 0;
 var extra_1 = require("./extra");
 Object.defineProperty(exports, "createCaptcha", { enumerable: true, get: function () { return extra_1.createCaptcha; } });
 Object.defineProperty(exports, "createCaptchaSync", { enumerable: true, get: function () { return extra_1.createCaptchaSync; } });
@@ -10,4 +10,3 @@ var captcha_1 = require("./captcha");
 Object.defineProperty(exports, "Captcha", { enumerable: true, get: function () { return captcha_1.Captcha; } });
 var CaptchaGenerator_1 = require("./CaptchaGenerator");
 Object.defineProperty(exports, "CaptchaGenerator", { enumerable: true, get: function () { return CaptchaGenerator_1.CaptchaGenerator; } });
-exports.version = require(`${__dirname}/../package.json`).version;
diff --git a/ts-script/index.ts b/ts-script/index.ts
index 08abbf9..bd4bc42 100644
--- a/ts-script/index.ts
+++ b/ts-script/index.ts
@@ -4,4 +4,3 @@ export { loadImage as resolveImage } from "skia-canvas";
 
 export { Captcha } from "./captcha";
 export { CaptchaGenerator } from "./CaptchaGenerator";
-export const version: string = require(`${__dirname}/../package.json`).version;