diff --git a/user.js b/user.js
index b3d7374..57d7e3e 100644
--- a/user.js
+++ b/user.js
@@ -822,6 +822,10 @@ user_pref("privacy.resistFingerprinting.block_mozAddonManager", true);
 user_pref("privacy.spoof_english", 1);
 /* 4507: skip browser.startup.blankWindow if RFP is used [FF136+] ***/
    // user_pref("privacy.resistFingerprinting.skipEarlyBlankFirstPaint", true); // [DEFAULT: true]
+/* 4510: enforce Contrast Control off [FF138+]
+ * 0=automatic, 1=off, 2=custom
+ * [SETTING] General>Language and Appearance>Contrast Control */
+   // user_pref("browser.display.document_color_use", 1); // [DEFAULT: 1 NON-WINDOWS]
 /* 4511: disable using system accent colors ***/
 user_pref("widget.non-native-theme.use-theme-accent", false); // [DEFAULT: false WINDOWS]
 /* 4512: enforce links targeting new windows to open in a new tab instead