TUTS : Change color in overlay menu

Hello all,

I just set up the plugin.
I needed to change the color when we click on the menu button.
My problem is that I needed to have the white menu icon. But the make of the overlay is also white. So once in the menu, we no longer saw the icon to exit the menu.

I looked at the code and here is a small css which will allow you to change the color once in the menu.

here is a gif image for you to show.
https://ibb.co/GChNQKp

Coded :

selector .fsmfe-wrapper .menu-toggle:checked + .icon-bars .bar-top {
margin-top: 0 !important;
transform: rotate(45deg);
background-color: black!important;
}

selector .fsmfe-wrapper .menu-toggle:checked + .icon-bars .bar-bottom {
margin-top: 0 !important;
transform: rotate(-45deg);
background-color: black!important;
}