diff --git a/alternative_user_files/userContent_no_addons.css b/alternative_user_files/userContent_no_addons.css
index a5d19cd..d4d2d1d 100644
--- a/alternative_user_files/userContent_no_addons.css
+++ b/alternative_user_files/userContent_no_addons.css
@@ -532,6 +532,9 @@ url(chrome://browser/content/pageinfo/pageInfo.xul) {
   tab[selected] {
     color: var(--in-content-link-color)!important
   }
+  textbox[type=search] > moz-input-box > .textbox-search-sign {
+    filter: invert(65%)
+  }
   @media screen and (-moz-os-version:windows-win7) {
     treechildren {
       --treechildren-outline: none!important
@@ -611,6 +614,7 @@ url-prefix(https://discovery.addons.mozilla.org) {
   #SanitizeDialogPane > groupbox,
   #mainDiv.non-verbose div.section h2,
   #onboarding-overlay,
+  .dialogBox,
   .dialogBox > .groupbox-body,
   .modal,
   .modal-overlay,
@@ -821,7 +825,8 @@ url-prefix(https://discovery.addons.mozilla.org) {
   .context-menu ul.context-menu-list li.context-menu-item a:hover span.icon {
     fill: var(--in-content-text-color)!important
   }
-  .dialogBox > .groupbox-title {
+  .dialogBox > .groupbox-title,
+  .dialogTitleBar {
     background-color: var(--in-content-category-header-background)!important;
     color: var(--in-content-page-color)!important;
     border-color: var(--in-content-box-border-color)!important
diff --git a/css/common-files/trees.css b/css/common-files/trees.css
index a83a53e..d0b29ab 100644
--- a/css/common-files/trees.css
+++ b/css/common-files/trees.css
@@ -53,6 +53,9 @@ url(chrome://browser/content/pageinfo/pageInfo.xul) {
   tab[selected] {
     color: var(--in-content-link-color)!important
   }
+  textbox[type=search] > moz-input-box > .textbox-search-sign {
+    filter: invert(65%)
+  }
   @media screen and (-moz-os-version:windows-win7) {
     treechildren {
       --treechildren-outline: none!important
diff --git a/css/userContent-files/about_pages.css b/css/userContent-files/about_pages.css
index 4013c9a..d465adf 100644
--- a/css/userContent-files/about_pages.css
+++ b/css/userContent-files/about_pages.css
@@ -71,6 +71,7 @@ url-prefix(https://discovery.addons.mozilla.org) {
   #SanitizeDialogPane > groupbox,
   #mainDiv.non-verbose div.section h2,
   #onboarding-overlay,
+  .dialogBox,
   .dialogBox > .groupbox-body,
   .modal,
   .modal-overlay,
@@ -281,7 +282,8 @@ url-prefix(https://discovery.addons.mozilla.org) {
   .context-menu ul.context-menu-list li.context-menu-item a:hover span.icon {
     fill: var(--in-content-text-color)!important
   }
-  .dialogBox > .groupbox-title {
+  .dialogBox > .groupbox-title,
+  .dialogTitleBar {
     background-color: var(--in-content-category-header-background)!important;
     color: var(--in-content-page-color)!important;
     border-color: var(--in-content-box-border-color)!important
diff --git a/userChrome.css b/userChrome.css
index a0b4323..da26ad9 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -532,6 +532,9 @@ url(chrome://browser/content/pageinfo/pageInfo.xul) {
   tab[selected] {
     color: var(--in-content-link-color)!important
   }
+  textbox[type=search] > moz-input-box > .textbox-search-sign {
+    filter: invert(65%)
+  }
   @media screen and (-moz-os-version:windows-win7) {
     treechildren {
       --treechildren-outline: none!important
diff --git a/userContent.css b/userContent.css
index 42cb572..656e3c8 100644
--- a/userContent.css
+++ b/userContent.css
@@ -532,6 +532,9 @@ url(chrome://browser/content/pageinfo/pageInfo.xul) {
   tab[selected] {
     color: var(--in-content-link-color)!important
   }
+  textbox[type=search] > moz-input-box > .textbox-search-sign {
+    filter: invert(65%)
+  }
   @media screen and (-moz-os-version:windows-win7) {
     treechildren {
       --treechildren-outline: none!important
@@ -611,6 +614,7 @@ url-prefix(https://discovery.addons.mozilla.org) {
   #SanitizeDialogPane > groupbox,
   #mainDiv.non-verbose div.section h2,
   #onboarding-overlay,
+  .dialogBox,
   .dialogBox > .groupbox-body,
   .modal,
   .modal-overlay,
@@ -821,7 +825,8 @@ url-prefix(https://discovery.addons.mozilla.org) {
   .context-menu ul.context-menu-list li.context-menu-item a:hover span.icon {
     fill: var(--in-content-text-color)!important
   }
-  .dialogBox > .groupbox-title {
+  .dialogBox > .groupbox-title,
+  .dialogTitleBar {
     background-color: var(--in-content-category-header-background)!important;
     color: var(--in-content-page-color)!important;
     border-color: var(--in-content-box-border-color)!important