diff --git a/CHANGELOG.md b/CHANGELOG.md
index 943e39e66b1..85c27076469 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 
 ### Fixed
 
+- We fixed an issue where the dark theme did not extend to a group's custom color picker. [#7481](https://github.com/JabRef/jabref/issues/7481)
 - We fixed an issue where choosing the fields on which autocompletion should not work in "Entry editor" preferences had no effect. [#7320](https://github.com/JabRef/jabref/issues/7320)
 - We fixed an issue where the "Normalize page numbers" formatter did not replace en-dashes or em-dashes with a hyphen-minus sign. [#7239](https://github.com/JabRef/jabref/issues/7239)
 - We fixed an issue with the style of highlighted check boxes while searching in preferences. [#7226](https://github.com/JabRef/jabref/issues/7226)
diff --git a/src/main/java/org/jabref/gui/Dark.css b/src/main/java/org/jabref/gui/Dark.css
index 0fd1c188c7f..62ab5a1888a 100644
--- a/src/main/java/org/jabref/gui/Dark.css
+++ b/src/main/java/org/jabref/gui/Dark.css
@@ -62,6 +62,10 @@
     color: #7d8591; /* -fx-mid-text-color*/
 }
 
+.custom-color-dialog {
+    -fx-background-color: -fx-control-inner-background;
+}
+
 .table-view .groupColumnBackground {
     -fx-stroke: -jr-gray-3;
 }