You can use below classes and IDs to override our default styling on the feedback popup.

Always add !important to your overriding styles to ensure higher selectivity.

/* Popup Modal Dimmer */
#feedbackery-modal{
	background-color: rgba(255,255,255,.85);
}

/* Popup Modal Class */
.feedbackery-modal-dialog{
	border-radius: 5px;
}

/* Popup Header Class */
.feedbackery-modal-header{
	background: #000;
}

/* Popup Header Title */
#feedback-modal-title{
	color: #fff;
}

/* Popup Close Icon */
.feedbackery-modal-header .feedbackery-close-modal{
	color: red;
}

/* Popup Submit Button */
#feedbackery-feedback-submit-button{
	background: #23ac68;
}

/* Popup Footer Background */
.feedbackery-modal-footer{
	background: #000;
	color: red;
}

/* Footer Link */
.feedbackery-modal-footer a{
	color:#fff;
}

/* Popup Loader Color */
.feedbackery-modal-content-loader .feedbackery-spinner-border{
	color:red;
}