diff --git a/themes/Bootswatch_Scss.zip b/themes/Bootswatch_Scss.zip
new file mode 100644
index 0000000..8ef1653
Binary files /dev/null and b/themes/Bootswatch_Scss.zip differ
diff --git a/themes/Bootswatch_Scss/Cerulian/variables.scss b/themes/Bootswatch_Scss/Cerulian/variables.scss
index 2361862..3577722 100644
--- a/themes/Bootswatch_Scss/Cerulian/variables.scss
+++ b/themes/Bootswatch_Scss/Cerulian/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Cosmo/variables.scss b/themes/Bootswatch_Scss/Cosmo/variables.scss
index 1fb2977..90a9b5f 100644
--- a/themes/Bootswatch_Scss/Cosmo/variables.scss
+++ b/themes/Bootswatch_Scss/Cosmo/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Cyborg/variables.scss b/themes/Bootswatch_Scss/Cyborg/variables.scss
index 4b2a66e..98a8a42 100644
--- a/themes/Bootswatch_Scss/Cyborg/variables.scss
+++ b/themes/Bootswatch_Scss/Cyborg/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Darkly/variables.scss b/themes/Bootswatch_Scss/Darkly/variables.scss
index 861d282..108929a 100644
--- a/themes/Bootswatch_Scss/Darkly/variables.scss
+++ b/themes/Bootswatch_Scss/Darkly/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Flatly/variables.scss b/themes/Bootswatch_Scss/Flatly/variables.scss
index 9554ecb..ef9446a 100644
--- a/themes/Bootswatch_Scss/Flatly/variables.scss
+++ b/themes/Bootswatch_Scss/Flatly/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Journal/variables.scss b/themes/Bootswatch_Scss/Journal/variables.scss
index 4927321..4a30ee5 100644
--- a/themes/Bootswatch_Scss/Journal/variables.scss
+++ b/themes/Bootswatch_Scss/Journal/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Lumen/variables.scss b/themes/Bootswatch_Scss/Lumen/variables.scss
index 6b91d90..095e566 100644
--- a/themes/Bootswatch_Scss/Lumen/variables.scss
+++ b/themes/Bootswatch_Scss/Lumen/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Paper/variables.scss b/themes/Bootswatch_Scss/Paper/variables.scss
index 623abe3..c402169 100644
--- a/themes/Bootswatch_Scss/Paper/variables.scss
+++ b/themes/Bootswatch_Scss/Paper/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Readable/variables.scss b/themes/Bootswatch_Scss/Readable/variables.scss
index f5e134a..eb6c002 100644
--- a/themes/Bootswatch_Scss/Readable/variables.scss
+++ b/themes/Bootswatch_Scss/Readable/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Sandstone/variables.scss b/themes/Bootswatch_Scss/Sandstone/variables.scss
index 1041096..0a53efa 100644
--- a/themes/Bootswatch_Scss/Sandstone/variables.scss
+++ b/themes/Bootswatch_Scss/Sandstone/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Simplex/variables.scss b/themes/Bootswatch_Scss/Simplex/variables.scss
index 5fee98c..48d5e92 100644
--- a/themes/Bootswatch_Scss/Simplex/variables.scss
+++ b/themes/Bootswatch_Scss/Simplex/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Slate/variables.scss b/themes/Bootswatch_Scss/Slate/variables.scss
index 5e691b9..c4c5aed 100644
--- a/themes/Bootswatch_Scss/Slate/variables.scss
+++ b/themes/Bootswatch_Scss/Slate/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Spacelab/variables.scss b/themes/Bootswatch_Scss/Spacelab/variables.scss
index bb40899..bb11e05 100644
--- a/themes/Bootswatch_Scss/Spacelab/variables.scss
+++ b/themes/Bootswatch_Scss/Spacelab/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/United/variables.scss b/themes/Bootswatch_Scss/United/variables.scss
index 83e895a..ea1be57 100644
--- a/themes/Bootswatch_Scss/United/variables.scss
+++ b/themes/Bootswatch_Scss/United/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Bootswatch_Scss/Yeti/variables.scss b/themes/Bootswatch_Scss/Yeti/variables.scss
index 8ad0ebf..8fac71c 100644
--- a/themes/Bootswatch_Scss/Yeti/variables.scss
+++ b/themes/Bootswatch_Scss/Yeti/variables.scss
@@ -556,7 +556,7 @@ $popover-arrow-color:                 $popover-bg;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
 
diff --git a/themes/Cajon_Scss/sidemenu/variables.scss b/themes/Cajon_Scss/sidemenu/variables.scss
index 101f85b..53e5458 100644
--- a/themes/Cajon_Scss/sidemenu/variables.scss
+++ b/themes/Cajon_Scss/sidemenu/variables.scss
@@ -370,7 +370,7 @@ $popover-title-bg:                    darken($popover-bg, 3%);
 $popover-arrow-width:                 10px;
 $popover-arrow-color:                 $popover-bg;
 $popover-arrow-outer-width:           ($popover-arrow-width + 1);
-$popover-arrow-outer-color:           fadein($popover-border-color, 0.005);
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.005);
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);