/* Change submit button color */
div.wpforms-container-full .wpforms-form input[type=submit], 
div.wpforms-container-full .wpforms-form button[type=submit] {
    background-color: #0077B5; /* Blue background */
	  color: #fff !important
}

/* Change submit button's hover color */
div.wpforms-container-full .wpforms-form input[type=submit]:hover, 
div.wpforms-container-full .wpforms-form input[type=submit]:active, 
div.wpforms-container-full .wpforms-form button[type=submit]:hover, 
div.wpforms-container-full .wpforms-form button[type=submit]:active, 
div.wpforms-container-full .wpforms-form .wpforms-page-button:hover, 
div.wpforms-container-full .wpforms-form .wpforms-page-button:active {
    background-color: #005784; /* Darker blue background */
}