Hi there,
Try this CSS.
Adding CSS: https://docs.generatepress.com/article/adding-css/
.comments-area input[type="text"], .comments-area input[type="email"], .comments-area input[type="url"], .comments-area input[type="password"], .comments-area textarea, .comments-area select {
color: #666;
background-color: #f7f8f9;
border-color: #ededed;
border-radius: 12px;
}
.comments-area input[type=text]:focus, .comments-area input[type=email]:focus, .comments-area input[type=url]:focus, .comments-area input[type=password]:focus, .comments-area textarea:focus, .comments-area select:focus {
color: #222;
background-color: #fff;
border-color: #48a0db;
}
.comments-area button:hover, .comments-area input[type=button]:hover, .comments-area input[type=reset]:hover, .comments-area input[type=submit]:hover, .comments-area a.button:hover, .comments-area button:focus, .comments-area input[type=button]:focus, .comments-area input[type=submit]:focus, .comments-area a.button:focus {
color: #fff;
background-color: #ff7f00;
border-radius: 10px;
}
.comments-area button, .comments-area input[type=button], .comments-area input[type=submit], .comments-area a.button {
color: #fff;
background-color: #210505;
border-radius: 10px;
}
Let me know if it works!