src/_core/_variables/_states.scss
//== Form states and alerts
//
//## Define colors for form feedback states and, by default, alerts.
$state-success-text: #3c763d !default;
$state-success-bg: #dff0d8 !default;
$state-success-border: darken(adjust-hue($state-success-bg, -10), 5%) !default;
$state-info-text: #31708f !default;
$state-info-bg: #d9edf7 !default;
$state-info-border: darken(adjust-hue($state-info-bg, -10), 7%) !default;
$state-warning-text: #8a6d3b !default;
$state-warning-bg: #fcf8e3 !default;
$state-warning-border: darken(adjust-hue($state-warning-bg, -10), 5%) !default;
$state-danger-text: #a94442 !default;
$state-danger-bg: #f2dede !default;
$state-danger-border: darken(adjust-hue($state-danger-bg, -10), 5%) !default;