diff --git a/lib-core.sh b/lib-core.sh
index 65b8331..f511793 100755
--- a/lib-core.sh
+++ b/lib-core.sh
@@ -75,6 +75,7 @@ ETC_CSS_FILE="/etc/alternatives/gdm3.css"
 ETC_GR_FILE="/etc/alternatives/gdm3-theme.gresource"
 YARU_GR_FILE="/usr/share/gnome-shell/theme/Yaru/gnome-shell-theme.gresource"
 POP_OS_GR_FILE="/usr/share/gnome-shell/theme/Pop/gnome-shell-theme.gresource"
+ZORIN_GR_FILE="/usr/share/gnome-shell/theme/ZorinBlue-Light/gnome-shell-theme.gresource"
 MISC_GR_FILE="/usr/share/gnome-shell/gnome-shell-theme.gresource"
 GS_GR_XML_FILE="${THEME_SRC_DIR}/main/gnome-shell/gnome-shell-theme.gresource.xml"
 
diff --git a/lib-install.sh b/lib-install.sh
index 08826b4..7809765 100755
--- a/lib-install.sh
+++ b/lib-install.sh
@@ -583,6 +583,8 @@ install_gdm_theme() {
       TARGET="${POP_OS_GR_FILE}"
     elif check_theme_file "$YARU_GR_FILE"; then
       TARGET="${YARU_GR_FILE}"
+    elif check_theme_file "$ZORIN_GR_FILE"; then
+      TARGET="${ZORIN_GR_FILE}"
     elif check_theme_file "$MISC_GR_FILE"; then
       TARGET="${MISC_GR_FILE}"
     fi
@@ -601,6 +603,7 @@ revert_gdm_theme() {
   restore_file "${ZORIN_CSS_FILE}"; restore_file "${ETC_CSS_FILE}"
   restore_file "${POP_OS_GR_FILE}"; restore_file "${YARU_GR_FILE}"
   restore_file "${MISC_GR_FILE}"; restore_file "${ETC_GR_FILE}"
+  restore_file "${ZORIN_GR_FILE}"
 }
 
 ###############################################################################
diff --git a/src/sass/gnome-shell/common/_calendar.scss b/src/sass/gnome-shell/common/_calendar.scss
index 4d70b7b..bcc224e 100644
--- a/src/sass/gnome-shell/common/_calendar.scss
+++ b/src/sass/gnome-shell/common/_calendar.scss
@@ -184,20 +184,24 @@
     color: $alt_fg_color !important;
     background-color: rgba($fg_color, 0.1);
     border: none;
+    background-gradient-direction: none !important;
 
     &:hover, &:focus {
       background-color: rgba($fg_color, 0.15);
       color: $fg_color !important;
+      background-gradient-direction: none !important;
     }
 
     &:active {
       background-color: darken($primary_color, 5%);
       color: $light_fg_color !important;
+      background-gradient-direction: none !important;
     }
 
     &:selected {
       background-color: $primary_color;
       color: $light_fg_color !important;
+      background-gradient-direction: none !important;
 
       &:hover, &:focus {
         background-color: lighten($primary_color, 8%);
diff --git a/src/sass/gnome-shell/common/_dialogs.scss b/src/sass/gnome-shell/common/_dialogs.scss
index f00c97e..edff59d 100644
--- a/src/sass/gnome-shell/common/_dialogs.scss
+++ b/src/sass/gnome-shell/common/_dialogs.scss
@@ -12,20 +12,24 @@
   color: white !important;
   background-color: $primary_color;
   box-shadow: inset 0 1px 0 0 rgba(white,0.1);
+  background-gradient-direction: none !important;
 
   &:hover {
     color: white !important;
     background-color: lighten($primary_color, 9%);
+    background-gradient-direction: none !important;
   }
 
   &:active {
     color: white !important;
     background-color: darken($primary_color, 5%);
+    background-gradient-direction: none !important;
   }
 
   &:insensitive {
     background-color: rgba($primary_color, 0.05);
     color: rgba($primary_color, 0.35) !important;
+    background-gradient-direction: none !important;
   }
 }
 
diff --git a/src/sass/gnome-shell/common/_popovers.scss b/src/sass/gnome-shell/common/_popovers.scss
index 8897e17..d78c9ee 100644
--- a/src/sass/gnome-shell/common/_popovers.scss
+++ b/src/sass/gnome-shell/common/_popovers.scss
@@ -98,10 +98,12 @@ $popop_menuitem_radius: $wm_radius - 4px;
       box-shadow: none;
       color: $alt_fg_color;
       background-color: $submenu_bg_color;
+      background-gradient-direction: none !important;
 
-      &.hover, &.selected {
+      &:hover, &.selected {
         color: $selected_fg_color;
         background-color: $selected_bg_color;
+        background-gradient-direction: none !important;
       }
 
       &:active {