diff --git a/src/gui/uithemedialog.cpp b/src/gui/uithemedialog.cpp
index 2d06ceeba..5b629d171 100644
--- a/src/gui/uithemedialog.cpp
+++ b/src/gui/uithemedialog.cpp
@@ -28,6 +28,7 @@
 
 #include "uithemedialog.h"
 
+#include <QtSystemDetection>
 #include <QColor>
 #include <QColorDialog>
 #include <QFileDialog>
@@ -233,6 +234,10 @@ UIThemeDialog::UIThemeDialog(QWidget *parent)
 {
     m_ui->setupUi(this);
 
+#if (defined(Q_OS_WIN) || defined(Q_OS_MACOS))
+    m_ui->colorsWarningLabel->hide();
+#endif
+
     connect(m_ui->buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
     connect(m_ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
 
diff --git a/src/gui/uithemedialog.ui b/src/gui/uithemedialog.ui
index c2de159d0..8c8f1a7ca 100644
--- a/src/gui/uithemedialog.ui
+++ b/src/gui/uithemedialog.ui
@@ -72,6 +72,21 @@
            </rect>
           </property>
           <layout class="QVBoxLayout" name="verticalLayout_3">
+           <item>
+            <widget class="QLabel" name="colorsWarningLabel">
+             <property name="text">
+              <string>Note that some custom colors may not be applied in some desktop environments.</string>
+             </property>
+             <property name="wordWrap">
+              <bool>true</bool>
+             </property>
+             <property name="font">
+              <font>
+               <italic>true</italic>
+              </font>
+             </property>
+            </widget>
+           </item>
            <item>
             <layout class="QGridLayout" name="colorsLayout" columnstretch="1,0,0,0,0" columnminimumwidth="0,15,0,15,0">
              <item row="0" column="0">