From bfc63a8194a58b2ca97be1f7792ec3ef6f46a052 Mon Sep 17 00:00:00 2001
From: canglan <admin@sea-studio.top>
Date: Fri, 17 Jul 2026 00:30:18 +0800
Subject: [PATCH] fix: captcha uses dark high-contrast colors only

---
 backend/routes/captcha.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/routes/captcha.js b/backend/routes/captcha.js
index a1e1e1b..0ec28ca 100644
--- a/backend/routes/captcha.js
+++ b/backend/routes/captcha.js
@@ -11,7 +11,7 @@ router.get('/', async (req, res) => {
     const captcha = svgCaptcha.create({
       size: 4,
       noise: 3,
-      color: true,
+      color: ['#1e40af','#7c3aed','#be123c','#b45309','#047857','#0f766e','#4338ca','#a21caf','#b91c1c','#3b82f6'],
       background: '#f4f4f4',
       width: 120,
       height: 44,