src/app/lore/component/element/hamburger.component.theme.scss
@import '~@angular/material/theming';
@mixin hamburger-component-theme($theme) {
$background: map-get($theme, background);
$primary: map-get($theme, primary);
app-hamburger > div > span {
background-color: mat-color($primary);
filter: invert(100%);
}
}