diff --git a/l10n/en-US/viewer.properties b/l10n/en-US/viewer.properties
index 93dc4e313..6f7598e3d 100644
--- a/l10n/en-US/viewer.properties
+++ b/l10n/en-US/viewer.properties
@@ -245,4 +245,3 @@ password_cancel=Cancel
 printing_not_supported=Warning: Printing is not fully supported by this browser.
 printing_not_ready=Warning: The PDF is not fully loaded for printing.
 web_fonts_disabled=Web fonts are disabled: unable to use embedded PDF fonts.
-document_colors_not_allowed=PDF documents are not allowed to use their own colors: “Allow pages to choose their own colors” is deactivated in the browser.
diff --git a/web/app.js b/web/app.js
index 9e83ab481..13ce63b94 100644
--- a/web/app.js
+++ b/web/app.js
@@ -119,10 +119,6 @@ class DefaultExternalServices {
     return shadow(this, "supportsDocumentFonts", true);
   }
 
-  static get supportsDocumentColors() {
-    return shadow(this, "supportsDocumentColors", true);
-  }
-
   static get supportedMouseWheelZoomModifierKeys() {
     return shadow(this, "supportedMouseWheelZoomModifierKeys", {
       ctrlKey: true,
@@ -570,10 +566,6 @@ const PDFViewerApplication = {
     return this.externalServices.supportsDocumentFonts;
   },
 
-  get supportsDocumentColors() {
-    return this.externalServices.supportsDocumentColors;
-  },
-
   get loadingBar() {
     const bar = new ProgressBar("#loadingBar");
     return shadow(this, "loadingBar", bar);
@@ -1609,7 +1601,6 @@ const PDFViewerApplication = {
     eventBus.on("beforeprint", _boundEvents.beforePrint);
     eventBus.on("afterprint", _boundEvents.afterPrint);
     eventBus.on("pagerendered", webViewerPageRendered);
-    eventBus.on("textlayerrendered", webViewerTextLayerRendered);
     eventBus.on("updateviewarea", webViewerUpdateViewarea);
     eventBus.on("pagechanging", webViewerPageChanging);
     eventBus.on("scalechanging", webViewerScaleChanging);
@@ -1684,7 +1675,6 @@ const PDFViewerApplication = {
     eventBus.off("beforeprint", _boundEvents.beforePrint);
     eventBus.off("afterprint", _boundEvents.afterPrint);
     eventBus.off("pagerendered", webViewerPageRendered);
-    eventBus.off("textlayerrendered", webViewerTextLayerRendered);
     eventBus.off("updateviewarea", webViewerUpdateViewarea);
     eventBus.off("pagechanging", webViewerPageChanging);
     eventBus.off("scalechanging", webViewerScaleChanging);
@@ -2025,28 +2015,6 @@ function webViewerPageRendered(evt) {
   }
 }
 
-function webViewerTextLayerRendered(evt) {
-  if (
-    typeof PDFJSDev !== "undefined" &&
-    PDFJSDev.test("FIREFOX || MOZCENTRAL") &&
-    evt.numTextDivs > 0 &&
-    !PDFViewerApplication.supportsDocumentColors
-  ) {
-    PDFViewerApplication.l10n
-      .get(
-        "document_colors_not_allowed",
-        null,
-        "PDF documents are not allowed to use their own colors: " +
-          "'Allow pages to choose their own colors' " +
-          "is deactivated in the browser."
-      )
-      .then(msg => {
-        console.error(msg);
-      });
-    PDFViewerApplication.fallback();
-  }
-}
-
 function webViewerPageMode({ mode }) {
   // Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
   let view;
diff --git a/web/firefoxcom.js b/web/firefoxcom.js
index e80ef3331..fcd322e72 100644
--- a/web/firefoxcom.js
+++ b/web/firefoxcom.js
@@ -343,11 +343,6 @@ class FirefoxExternalServices extends DefaultExternalServices {
     return shadow(this, "supportsDocumentFonts", support);
   }
 
-  static get supportsDocumentColors() {
-    const support = FirefoxCom.requestSync("supportsDocumentColors");
-    return shadow(this, "supportsDocumentColors", support);
-  }
-
   static get supportedMouseWheelZoomModifierKeys() {
     const support = FirefoxCom.requestSync(
       "supportedMouseWheelZoomModifierKeys"