$tab-base-color: $neutral-light-color !default; $tab-base-color-over: mix($base-color, $tab-base-color, 20%) !default; $tab-base-color-active: $base-highlight-color !default; $tab-base-color-disabled: $tab-base-color !default; $tab-border-width: 1px !default; $tab-border-color: $neutral-light-color !default; $tab-border-color-active: $tab-base-color-active !default; $tab-border-color-disabled: $tab-border-color !default; $tab-inner-border-color-focus: $tab-base-color-active !default; $tab-inner-border-color-focus-over: $tab-inner-border-color-focus !default; $tab-color: #000 !default; $tab-color-active: #fff !default; $tab-color-disabled: $tab-color !default; $tab-padding: 3px 8px !default;