customizable bootstrap skin+custom theme+colors

// Color system
//

$white:    #fff !default;
$gray-100: #f8f9fa !default;
$gray-200: #e9ecef !default;
$gray-300: #dee2e6 !default;
$gray-400: #ced4da !default;
$gray-500: #adb5bd !default;
$gray-600: #868e96 !default;
$gray-700: #495057 !default;
$gray-800: #343a40 !default;
$gray-900: #212529 !default;
$black:    #000 !default;

$blue:    #007bff !default;
$indigo:  #6610f2 !default;
$purple:  #6f42c1 !default;
$pink:    #e83e8c !default;
$red:     #dc3545 !default;
$orange:  #fd7e14 !default;
$yellow:  #ffc107 !default;
$green:   #28a745 !default;
$teal:    #20c997 !default;
$cyan:    #17a2b8 !default;

$primary:       $blue !default;
$secondary:     $gray-600 !default;
$success:       $green !default;
$info:          $cyan !default;
$warning:       $yellow !default;
$danger:        $red !default;
$light:         $gray-100 !default;
$dark:          $gray-800 !default;

// Methods to access colors
//

$grays: () !default;
$grays: map-merge((
  "100": $gray-100,
  "200": $gray-200,
  "300": $gray-300,
  "400": $gray-400,
  "500": $gray-500,
  "600": $gray-600,
  "700": $gray-700,
  "800": $gray-800,
  "900": $gray-900
), $grays);

$colors: () !default;
$colors: map-merge((
  "blue":       $blue,
  "indigo":     $indigo,
  "purple":     $purple,
  "pink":       $pink,
  "red":        $red,
  "orange":     $orange,
  "yellow":     $yellow,
  "green":      $green,
  "teal":       $teal,
  "cyan":       $cyan,
  "white":      $white,
  "gray":       $gray-600,
  "gray-dark":  $gray-800
), $colors);

$theme-colors: () !default;
$theme-colors: map-merge((
  "primary":    $primary,
  "secondary":  $secondary,
  "success":    $success,
  "info":       $info,
  "warning":    $warning,
  "danger":     $danger,
  "light":      $light,
  "dark":       $dark
), $theme-colors);
// stylelint-enable

// Set a specific jump point for requesting color jumps
$theme-color-interval:      8% !default;

// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
$yiq-contrasted-threshold: 150 !default;

// Customize the light and dark text colors for use in our YIQ color contrast function.
$yiq-text-dark: $gray-900 !default;
$yiq-text-light: $white !default;

// Body
//
// Settings for the `<body>` element.
$body-bg:                   $white !default;
$body-color:                $gray-900 !default;

// Links
//
// Style anchor elements.

$link-color:                theme-color("primary") !default;
$link-decoration:           none !default;
$link-hover-color:          darken($link-color, 15%) !default;
$link-hover-decoration:     underline !default;