paperless-ngx/src-ui/src/app/components/common/input/permissions/permissions-user/permissions-user.component.scss

.paperless-input-select.disabled {
    cursor: not-allowed;

    ::ng-deep ng-select {
        pointer-events: none;

        .ng-select-container {
            background-color: var(--pngx-bg-disabled) !important;
        }
    }
}