diff --git a/Zukitre/gtk-3.0/_common.scss b/Zukitre/gtk-3.0/_common.scss
index 0e8d1b3..4da63d0 100644
--- a/Zukitre/gtk-3.0/_common.scss
+++ b/Zukitre/gtk-3.0/_common.scss
@@ -3127,6 +3127,8 @@ expander {
     &:dir(rtl) { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic-rtl'); }
 
     &:hover { color: lighten($fg_color, 30%); } //only lightens the arrow
+    &:disabled { color: $insensitive_fg_color; }
+    &:disabled:backdrop { color: $backdrop_insensitive_color; }
 
     &:checked { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }
   }
diff --git a/Zukitre/gtk-3.0/gtk-contained-dark.css b/Zukitre/gtk-3.0/gtk-contained-dark.css
index c155f93..cc13a22 100644
--- a/Zukitre/gtk-3.0/gtk-contained-dark.css
+++ b/Zukitre/gtk-3.0/gtk-contained-dark.css
@@ -1322,6 +1322,10 @@ expander title > arrow:dir(rtl) { -gtk-icon-source: -gtk-icontheme("pan-end-symb
 
 expander title > arrow:hover { color: white; }
 
+expander title > arrow:disabled { color: #838a8f; }
+
+expander title > arrow:disabled:backdrop { color: #465a65; }
+
 expander title > arrow:checked { -gtk-icon-source: -gtk-icontheme("pan-down-symbolic"); }
 
 /************ Calendar * */
diff --git a/Zukitre/gtk-3.0/gtk-contained.css b/Zukitre/gtk-3.0/gtk-contained.css
index 506fc5a..887a7e5 100644
--- a/Zukitre/gtk-3.0/gtk-contained.css
+++ b/Zukitre/gtk-3.0/gtk-contained.css
@@ -1366,6 +1366,10 @@ expander title > arrow:dir(rtl) { -gtk-icon-source: -gtk-icontheme("pan-end-symb
 
 expander title > arrow:hover { color: #797979; }
 
+expander title > arrow:disabled { color: #818181; }
+
+expander title > arrow:disabled:backdrop { color: #b0b0b0; }
+
 expander title > arrow:checked { -gtk-icon-source: -gtk-icontheme("pan-down-symbolic"); }
 
 /************ Calendar * */
diff --git a/Zukitwo/gtk-3.0/_common.scss b/Zukitwo/gtk-3.0/_common.scss
index 7d2e8a2..ddc274c 100644
--- a/Zukitwo/gtk-3.0/_common.scss
+++ b/Zukitwo/gtk-3.0/_common.scss
@@ -3178,6 +3178,8 @@ expander {
     &:dir(rtl) { -gtk-icon-source: -gtk-icontheme('pan-end-symbolic-rtl'); }
 
     &:hover { color: lighten($fg_color, 30%); } //only lightens the arrow
+    &:disabled { color: $insensitive_fg_color; }
+    &:disabled:backdrop { color: $backdrop_insensitive_color; }
 
     &:checked { -gtk-icon-source: -gtk-icontheme('pan-down-symbolic'); }
   }
diff --git a/Zukitwo/gtk-3.0/gtk-contained-dark.css b/Zukitwo/gtk-3.0/gtk-contained-dark.css
index 5f0bb7b..549b481 100644
--- a/Zukitwo/gtk-3.0/gtk-contained-dark.css
+++ b/Zukitwo/gtk-3.0/gtk-contained-dark.css
@@ -1318,6 +1318,10 @@ expander title > arrow:dir(rtl) { -gtk-icon-source: -gtk-icontheme("pan-end-symb
 
 expander title > arrow:hover { color: white; }
 
+expander title > arrow:disabled { color: #8d9093; }
+
+expander title > arrow:disabled:backdrop { color: #4d5762; }
+
 expander title > arrow:checked { -gtk-icon-source: -gtk-icontheme("pan-down-symbolic"); }
 
 /************ Calendar * */
diff --git a/Zukitwo/gtk-3.0/gtk-contained.css b/Zukitwo/gtk-3.0/gtk-contained.css
index dfab122..9db881e 100644
--- a/Zukitwo/gtk-3.0/gtk-contained.css
+++ b/Zukitwo/gtk-3.0/gtk-contained.css
@@ -1362,6 +1362,10 @@ expander title > arrow:dir(rtl) { -gtk-icon-source: -gtk-icontheme("pan-end-symb
 
 expander title > arrow:hover { color: #797979; }
 
+expander title > arrow:disabled { color: #818181; }
+
+expander title > arrow:disabled:backdrop { color: #b0b0b0; }
+
 expander title > arrow:checked { -gtk-icon-source: -gtk-icontheme("pan-down-symbolic"); }
 
 /************ Calendar * */