diff --git a/src/app/theme/sass/_layout.scss b/src/app/theme/sass/_layout.scss
index 3f4d82d4..b25e36ff 100644
--- a/src/app/theme/sass/_layout.scss
+++ b/src/app/theme/sass/_layout.scss
@@ -22,11 +22,7 @@ main {
   @include body-bg();
 
   .additional-bg {
-    position: fixed;
-    top: 0;
-    left: 0;
-    bottom: 0;
-    right: 0;
+    display: none;
     @include additional-bg();
   }
 }
diff --git a/src/app/theme/sass/conf/colorSchemes/_blur.scss b/src/app/theme/sass/conf/colorSchemes/_blur.scss
index 31f44293..37bb9cdf 100644
--- a/src/app/theme/sass/conf/colorSchemes/_blur.scss
+++ b/src/app/theme/sass/conf/colorSchemes/_blur.scss
@@ -74,5 +74,5 @@ $hoverlink: $primary-dark;
   }
 }
 @mixin additional-bg() {
-  display: none;
+  //display: block; // additional background layer, hidden by default
 }
diff --git a/src/app/theme/sass/conf/colorSchemes/_mint.scss b/src/app/theme/sass/conf/colorSchemes/_mint.scss
index e672f2d6..75002a22 100644
--- a/src/app/theme/sass/conf/colorSchemes/_mint.scss
+++ b/src/app/theme/sass/conf/colorSchemes/_mint.scss
@@ -58,5 +58,5 @@ $hoverlink: $primary-dark;
   background-color: $body-bg;
 }
 @mixin additional-bg() {
-  display: none;
+  //display: block; // additional background layer, hidden by default
 }
diff --git a/src/app/theme/sass/conf/colorSchemes/_ng2.scss b/src/app/theme/sass/conf/colorSchemes/_ng2.scss
index 89935a8e..d96bbf21 100644
--- a/src/app/theme/sass/conf/colorSchemes/_ng2.scss
+++ b/src/app/theme/sass/conf/colorSchemes/_ng2.scss
@@ -58,6 +58,12 @@ $hoverlink: darken($activelink, 20%);
 
 @mixin additional-bg() {
   display: block;
+  position: fixed;
+  top: 0;
+  left: 0;
+  bottom: 0;
+  right: 0;
+
   @include gradient(#73c5d9, #4691d1, #455e9f);
   &::after {
     content: '';