All the SCSS settings that can't be overriden by SCSS

cd theme/boost/scss

grep '^\s*\$.*:.*;' {.,moodle,preset}/*.scss | grep -v '!default'

moodle/blocks.scss:$blocks-plus-gutter: $blocks-column-width + ( $grid-gutter-width / 2 );

moodle/blocks.scss:$card-gutter : $card-deck-margin * 2;

moodle/calendar.scss:$calendarCurrentDateColor: $white;

moodle/calendar.scss:$calendarCurrentDateBackground: $primary;

moodle/core.scss:    $mod-indent-size: 30px;

moodle/core.scss:        $width: ($i * $mod-indent-size);

moodle/core.scss:    $pageHeaderHeight: 140px;

moodle/core.scss:$scrollbar-thumb: $primary;

moodle/core.scss:$scrollbar-track: lighten($primary, 40%);

moodle/course.scss:$activity-item-color: $body-color;

moodle/courseindex.scss:$courseindex-item-padding-y: 0.5rem;

moodle/courseindex.scss:$courseindex-item-padding-x: 0.5rem;

moodle/drawer.scss:$fixed-header-y: $navbar-height;

moodle/drawer.scss:$right-drawer-width: 320px;

moodle/grade.scss:            $rubricPadding: 6px;

moodle/icons.scss:$icon-width: 16px;

moodle/icons.scss:$icon-height: 16px;

moodle/icons.scss:$icon-big-width: 64px;

moodle/icons.scss:$icon-big-height: 64px;

moodle/modules.scss:$author-image-width: 70px;

moodle/modules.scss:$author-image-margin: 24px;

moodle/modules.scss:$author-image-width-sm: 30px;

moodle/modules.scss:$author-image-margin-sm: 8px;

moodle/modules.scss:        $bg: lighten($red, ($i * 3%));

moodle/modules.scss:$popout-header-font-size: 1.5 * $font-size-base;

moodle/modules.scss:$popout-header-height: 4rem;

moodle/popover-region.scss:$standard-border: 1px solid #ddd;

moodle/popover-region.scss:$region-container-height: 500px;

moodle/popover-region.scss:$region-container-width: 380px;

moodle/popover-region.scss:$region-container-z-index: 1;

moodle/popover-region.scss:$region-header-height: 25px;

moodle/popover-region.scss:$region-footer-height: 30px;

moodle/popover-region.scss:$content-item-hover-colour-bg: $primary;

moodle/popover-region.scss:$content-item-hover-colour-text: #fff;

moodle/popover-region.scss:$content-item-selected-colour-bg: #4f94cd;

moodle/popover-region.scss:$content-item-unread-colour: #f4f4f4;

moodle/popover-region.scss:$content-header-footer-height: $region-header-height + $region-footer-height;

moodle/reportbuilder.scss:    $inner-scrollbar-thumb: $secondary;

moodle/reportbuilder.scss:    $inner-scrollbar-track: lighten($secondary, 40%);

moodle/reportbuilder.scss:$rb-left-sidebar-width: 250px;

moodle/reportbuilder.scss:$rb-right-sidebar-width: 350px;

moodle/reportbuilder.scss:    $tabs-height: 83px;

moodle/reportbuilder.scss:    $sidebar-margin-top: $navbar-height + $tabs-height + 20px;

moodle/tool_usertours.scss:$flexitour-base-zindex: 1040;

moodle/tool_usertours.scss:        $opposite: map_get($opposites, $direction);

moodle/tool_usertours.scss:        $side: map_get($sides, $direction);

moodle/tool_usertours.scss:        $oppositeside: map_get($opposites, $side);

moodle/variables.scss:$primary-light-color: $body-color;

moodle/variables.scss:$activity-iconcontainer-height: 50px;

moodle/variables.scss:$activity-iconcontainer-width: 50px;

preset/default.scss:$info-outline:    #1f7e9a;

preset/default.scss:$warning-outline: #a6670e;

preset/default.scss:$card-group-margin: .25rem;

preset/default.scss:$custom-control-indicator-size: 1.25rem;

preset/default.scss:$dropdown-link-hover-color: $white;

preset/default.scss:$dropdown-link-hover-bg: $primary;