.wp-block-mu-th-r-alert.is-style-warning {
    background-color: #fff7ed;
    border-left: 4px solid #f97316;
}
.wp-block-mu-th-r-alert.is-style-warning .dashicons {
    color: #f97316;
}

.wp-block-mu-th-r-alert.is-style-info {
    background-color: #e3f2fd;
    border-left: 4px solid #2196f3;
}
.wp-block-mu-th-r-alert.is-style-info .dashicons {
    color: #2196f3;
}

.wp-block-mu-th-r-alert.is-style-notice {
	background-color: #cffafe;
	border-left: 4px solid #06b6d4;
}
.wp-block-mu-th-r-alert.is-style-notice .dashicons {
	color: #06b6d4;
}