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diff --git a/dom/canvas/test/test_bug232227.html b/dom/canvas/test/test_bug232227.html
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+++ b/dom/canvas/test/test_bug232227.html
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=232227
+-->
+<head>
+  <title>Test for Bug 232227</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=232227">Mozilla Bug 232227</a>
+<script>
+
+/** Test for Bug 232227 **/
+
+function runTest(testCanvasColors) {
+  var colorNames = [
+    [ "AppWorkspace", 0xFF, 0xFF, 0xFF ], // deprecated, same as Canvas/Window (bug 1803930)
+    [ "Background", 0xFF, 0xFF, 0xFF ], // deprecated, same as Canvas/Window (bug 1803930)
+    [ "ButtonFace", 0xE9, 0xE9, 0xED ],
+    [ "ButtonHighlight", 0xE9, 0xE9, 0xED ], // deprecated, same as ButtonFace (bug 1803932)
+    [ "ButtonShadow", 0xE9, 0xE9, 0xED ], // deprecated, same as ButtonFace (bug 1803932)
+    [ "ButtonText", 0x00, 0x00, 0x00 ],
+    [ "GrayText", 0x6D, 0x6D, 0x6D ],
+    [ "Highlight", 0x33, 0x99, 0xFF ],
+    [ "HighlightText", 0xFF, 0xFF, 0xFF ],
+    [ "InfoBackground", 0xFF, 0xFF, 0xFF ], // deprecated, same as Canvas/Window (bug 1874065)
+    [ "InfoText", 0x00, 0x00, 0x00 ], // deprecated, same as CanvasText/WindowText (bug 1803931)
+    [ "Menu", 0xFF, 0xFF, 0xFF ], // deprecated, same as Canvas/Window (bug 1803930)
+    [ "MenuText", 0x00, 0x00, 0x00 ], // deprecated, same as CanvasText/WindowText (bug 1873951)
+    [ "Scrollbar", 0xFF, 0xFF, 0xFF ], // deprecated, same as Canvas/Window (bug 1803930)
+    [ "ThreeDDarkShadow", 0xE3, 0xE3, 0xE3 ], // deprecated, same as ButtonBorder (bug 1803933)
+    [ "ThreeDFace", 0xE9, 0xE9, 0xED ], // deprecated, same as ButtonFace (bug 1874064)
+    [ "ThreeDHighlight", 0xE3, 0xE3, 0xE3 ], // deprecated, same as ButtonBorder (bug 1803933)
+    [ "ThreeDLightShadow", 0xE3, 0xE3, 0xE3 ],
+    [ "ThreeDShadow", 0xE3, 0xE3, 0xE3 ], // deprecated, same as ButtonBorder (bug 1803933)
+    [ "Window", 0xFF, 0xFF, 0xFF ],
+    [ "WindowFrame", 0xE3, 0xE3, 0xE3 ], // deprecated, same as ButtonBorder (bug 1803933)
+    [ "WindowText", 0x00, 0x00, 0x00 ],
+    [ "-moz-ButtonHoverFace", 0xD0, 0xD0, 0xD7 ],
+    [ "-moz-ButtonHoverText", 0x00, 0x00, 0x00 ],
+    [ "-moz-CellHighlight", 0xF0, 0xF0, 0xF0 ],
+    [ "-moz-CellHighlightText", 0x00, 0x00, 0x00 ],
+    [ "-moz-Combobox", 0xE9, 0xE9, 0xED ],
+    [ "-moz-ComboboxText", 0x00, 0x00, 0x00 ],
+    [ "-moz-Dialog", 0xF0, 0xF0, 0xF0 ],
+    [ "-moz-DialogText", 0x00, 0x00, 0x00 ],
+    [ "-moz-EvenTreeRow", 0xFF, 0xFF, 0xFF ],
+    [ "-moz-Field", 0xFF, 0xFF, 0xFF ],
+    [ "-moz-FieldText", 0x00, 0x00, 0x00 ],
+    [ "-moz-MenuHover", 0x33, 0x99, 0xFF ],
+    [ "-moz-MenuHoverText", 0x00, 0x00, 0x00 ],
+    [ "-moz-MenubarHoverText", 0x00, 0x00, 0x00 ],
+    [ "-moz-OddTreeRow", 0xFF, 0xFF, 0xFF ],
+    [ "SelectedItem", 0x33, 0x99, 0xFF ],
+    [ "SelectedItemText", 0xFF, 0xFF, 0xFF ],
+
+    // These five are configured via Tools -> Options -> Content -> Colors.
+    //"-moz-ActiveHyperlinkText",
+    //"-moz-HyperLinkText",
+    //"-moz-VisitedHyperlinkText",
+    //"-moz-default-background-color",
+    //"-moz-default-color",
+  ];
+
+  var colorTestCanvas = document.createElement("canvas");
+  colorTestCanvas.width = colorTestCanvas.height = 1;
+  colorTestCanvas = colorTestCanvas.getContext("2d");
+
+  var colorTestDiv = document.createElement("div");
+  document.body.appendChild(colorTestDiv);
+
+  for (let [colorName, r, g, b] of colorNames) {
+    // test value
+    var ctest = "rgb(" + r + ", " + g + ", " + b + ")";
+
+    // computed value
+    colorTestDiv.style.backgroundColor = "";
+    colorTestDiv.style.backgroundColor = colorName;
+    var c1 = getComputedStyle(colorTestDiv).backgroundColor;
+    is(c1, ctest, "Stand-in computed color: " + colorName + " is correct.");
+
+    // canvas
+    if (testCanvasColors && colorTestCanvas) {
+      colorTestCanvas.fillStyle = colorName;
+      colorTestCanvas.fillRect(0, 0, 1, 1);
+      var c2 = colorTestCanvas.getImageData(0, 0, 1, 1).data;
+      c2 = "rgb(" + c2[0] + ", " + c2[1] + ", " + c2[2] + ")";
+      is(c2, ctest, "Stand-in canvas color: " + colorName + " is correct.");
+    }
+  }
+}
+
+(async function() {
+  SimpleTest.waitForExplicitFinish();
+  await SpecialPowers.pushPrefEnv({ "set" : [
+    [ "ui.use_standins_for_native_colors", true ],
+  ]});
+  runTest(/* testCanvasColors = */ true);
+  await SpecialPowers.pushPrefEnv({ "set" : [
+    [ "privacy.resistFingerprinting", true ],
+    [ "ui.use_standins_for_native_colors", false ],
+  ]});
+  // With privacy.resistFingerprinting canvas data doesn't reflect the actual
+  // canvas, apparently.
+  runTest(/* testCanvasColors = */ false);
+  SimpleTest.finish();
+}());
+</script>
+</body>
+</html>