diff --git a/Bootstrap.Admin/wwwroot/lib/captcha/slidercaptcha.css b/Bootstrap.Admin/wwwroot/lib/captcha/slidercaptcha.css
index cf3e91be..23bfb533 100644
--- a/Bootstrap.Admin/wwwroot/lib/captcha/slidercaptcha.css
+++ b/Bootstrap.Admin/wwwroot/lib/captcha/slidercaptcha.css
@@ -120,12 +120,12 @@ body {
   top: 0;
   cursor: pointer;
   margin: 6px;
-  color: rgba(0,0,0,.25);
+  color: rgba(255,255,255,.8);
   font-size: 1rem;
   z-index: 5;
   transition: color .3s linear;
 }
 
   .refreshIcon:hover {
-    color: #6c757d;
+    color: #fff;
   }