diff --git a/theme_anelusia/static/src/scss/bootstrap_overridden.scss b/theme_anelusia/static/src/scss/bootstrap_overridden.scss
index 69a4a59b0..15ab6da2a 100644
--- a/theme_anelusia/static/src/scss/bootstrap_overridden.scss
+++ b/theme_anelusia/static/src/scss/bootstrap_overridden.scss
@@ -2,9 +2,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// 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:                  200 !default;
-
 // Spacing
 //
 // Control the default styling of most Bootstrap elements by modifying these
diff --git a/theme_aviato/static/src/scss/bootstrap_overridden.scss b/theme_aviato/static/src/scss/bootstrap_overridden.scss
index a1eb0c50b..d4ec400cc 100644
--- a/theme_aviato/static/src/scss/bootstrap_overridden.scss
+++ b/theme_aviato/static/src/scss/bootstrap_overridden.scss
@@ -2,9 +2,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// 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:                  200 !default;
-
 // Options
 //
 // Quickly modify global styling by enabling or disabling optional features.
diff --git a/theme_bistro/static/src/scss/bootstrap_overridden.scss b/theme_bistro/static/src/scss/bootstrap_overridden.scss
index c7252cf04..06305361d 100644
--- a/theme_bistro/static/src/scss/bootstrap_overridden.scss
+++ b/theme_bistro/static/src/scss/bootstrap_overridden.scss
@@ -21,9 +21,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:                  200 !default;
-
 // Options
 //
 // Quickly modify global styling by enabling or disabling optional features.
diff --git a/theme_bookstore/static/src/scss/bootstrap_overridden.scss b/theme_bookstore/static/src/scss/bootstrap_overridden.scss
index 1398838c4..e69de29bb 100644
--- a/theme_bookstore/static/src/scss/bootstrap_overridden.scss
+++ b/theme_bookstore/static/src/scss/bootstrap_overridden.scss
@@ -1,5 +0,0 @@
-// Colors
-
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light".
-// Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:  140 !default;
diff --git a/theme_enark/static/src/scss/bootstrap_overridden.scss b/theme_enark/static/src/scss/bootstrap_overridden.scss
index e8af44948..de677dda6 100644
--- a/theme_enark/static/src/scss/bootstrap_overridden.scss
+++ b/theme_enark/static/src/scss/bootstrap_overridden.scss
@@ -1,10 +1,3 @@
-// Colors
-
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light".
-// Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:  150 !default;
-
-
 // Components
 //
 // Define common padding and border radius sizes and more.
diff --git a/theme_kiddo/static/src/scss/bootstrap_overridden.scss b/theme_kiddo/static/src/scss/bootstrap_overridden.scss
index c41bf19c6..fc5bf4ebc 100644
--- a/theme_kiddo/static/src/scss/bootstrap_overridden.scss
+++ b/theme_kiddo/static/src/scss/bootstrap_overridden.scss
@@ -1,8 +1,3 @@
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light".
-// Acceptable values are between 0 and 255.
-
-$yiq-contrasted-threshold:  150 !default;
-
 // Shadow
 
 $box-shadow-sm:               0 0 .3125rem rgba(0,0,0,.25) !default;
diff --git a/theme_nano/static/src/scss/bootstrap_overridden.scss b/theme_nano/static/src/scss/bootstrap_overridden.scss
index 2a466697e..56b9e6e1d 100644
--- a/theme_nano/static/src/scss/bootstrap_overridden.scss
+++ b/theme_nano/static/src/scss/bootstrap_overridden.scss
@@ -63,9 +63,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:                  200 !default;
-
 // Typography
 //
 // Font, line-height, and color for body text, headings, and more.
diff --git a/theme_notes/static/src/scss/bootstrap_overridden.scss b/theme_notes/static/src/scss/bootstrap_overridden.scss
index 94ef44996..e2ffbec9c 100644
--- a/theme_notes/static/src/scss/bootstrap_overridden.scss
+++ b/theme_notes/static/src/scss/bootstrap_overridden.scss
@@ -1,8 +1,3 @@
-// Colors
-
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:  200 !default;
-
 // Shadows
 
 $box-shadow-sm:               0 0 .3125rem rgba(0,0,0,.25) !default;
diff --git a/theme_paptic/static/src/scss/bootstrap_overridden.scss b/theme_paptic/static/src/scss/bootstrap_overridden.scss
index e1b2b9aa8..16767dc7a 100644
--- a/theme_paptic/static/src/scss/bootstrap_overridden.scss
+++ b/theme_paptic/static/src/scss/bootstrap_overridden.scss
@@ -1,10 +1,3 @@
-//------------------------------------------------------------------------------
-// Bootstrap Overridden
-//------------------------------------------------------------------------------
-
-$yiq-contrasted-threshold: 170 !default;
-
-
 // Headings
 
 $headings-line-height: 1.1 !default;
diff --git a/theme_treehouse/static/src/scss/bootstrap_overridden.scss b/theme_treehouse/static/src/scss/bootstrap_overridden.scss
index 7d9ce5c35..3656dde7a 100644
--- a/theme_treehouse/static/src/scss/bootstrap_overridden.scss
+++ b/theme_treehouse/static/src/scss/bootstrap_overridden.scss
@@ -22,9 +22,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// 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:                  200 !default;
-
 // Options
 //
 // Quickly modify global styling by enabling or disabling optional features.
diff --git a/theme_zap/static/src/scss/bootstrap_overridden.scss b/theme_zap/static/src/scss/bootstrap_overridden.scss
index d76f31a8a..a7168aa17 100644
--- a/theme_zap/static/src/scss/bootstrap_overridden.scss
+++ b/theme_zap/static/src/scss/bootstrap_overridden.scss
@@ -57,9 +57,6 @@
 // Bootstrap
 //------------------------------------------------------------------------------//
 
-// 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:                  200 !default;
-
 // Options
 //
 // Quickly modify global styling by enabling or disabling optional features.