how to change the colors of an MDBInputGroup code example

Example: mdbootstrap input color

input[type=date]:focus:not([readonly]), input[type=datetime-local]:focus:not([readonly]), input[type=email]:focus:not([readonly]), input[type=number]:focus:not([readonly]), input[type=password]:focus:not([readonly]), input[type=search-md]:focus:not([readonly]), input[type=search]:focus:not([readonly]), input[type=tel]:focus:not([readonly]), input[type=text]:focus:not([readonly]), input[type=time]:focus:not([readonly]), input[type=url]:focus:not([readonly]), textarea.md-textarea:focus:not([readonly]) {
    border-bottom: 1px solid #4285F4;
    box-shadow: 0 1px 0 0 #4285F4;
}