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diff --git a/devtools/client/inspector/grids/test/browser_grids_color-in-rules-grid-toggle.js b/devtools/client/inspector/grids/test/browser_grids_color-in-rules-grid-toggle.js
new file mode 100644
index 0000000000..a12f4f2435
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+++ b/devtools/client/inspector/grids/test/browser_grids_color-in-rules-grid-toggle.js
@@ -0,0 +1,93 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test toggling the grid highlighter in the rule view with changes to the grid color
+// from the layout view.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid">
+    <div id="cell1">cell1</div>
+    <div id="cell2">cell2</div>
+  </div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, gridInspector, layoutView } = await openLayoutView();
+  const { document: doc } = gridInspector;
+  const { store } = inspector;
+  const cPicker = layoutView.swatchColorPickerTooltip;
+  const spectrum = cPicker.spectrum;
+  const swatch = doc.querySelector(
+    "#layout-grid-container .layout-color-swatch"
+  );
+
+  info("Scrolling into view of the #grid color swatch.");
+  swatch.scrollIntoView();
+
+  info("Opening the color picker by clicking on the #grid color swatch.");
+  const onColorPickerReady = cPicker.once("ready");
+  swatch.click();
+  await onColorPickerReady;
+
+  await simulateColorPickerChange(cPicker, [0, 255, 0, 0.5]);
+
+  is(
+    swatch.style.backgroundColor,
+    "rgba(0, 255, 0, 0.5)",
+    "The color swatch's background was updated."
+  );
+
+  info("Pressing RETURN to commit the color change.");
+  const onGridColorUpdate = waitUntilState(
+    store,
+    state => state.grids[0].color === "#00FF0080"
+  );
+  const onColorPickerHidden = cPicker.tooltip.once("hidden");
+  focusAndSendKey(spectrum.element.ownerDocument.defaultView, "RETURN");
+  await onColorPickerHidden;
+  await onGridColorUpdate;
+
+  is(
+    swatch.style.backgroundColor,
+    "rgba(0, 255, 0, 0.5)",
+    "The color swatch's background was kept after RETURN."
+  );
+
+  info("Selecting the rule view.");
+  const ruleView = selectRuleView(inspector);
+  const highlighters = ruleView.highlighters;
+
+  await selectNode("#grid", inspector);
+
+  const container = getRuleViewProperty(ruleView, "#grid", "display").valueSpan;
+  const gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  info("Toggling ON the CSS grid highlighter from the rule-view.");
+  const onHighlighterShown = highlighters.once(
+    "grid-highlighter-shown",
+    (nodeFront, options) => {
+      info("Checking the grid highlighter display settings.");
+      const {
+        color,
+        showGridAreasOverlay,
+        showGridLineNumbers,
+        showInfiniteLines,
+      } = options;
+
+      is(color, "#00FF0080", "CSS grid highlighter color is correct.");
+      ok(!showGridAreasOverlay, "Show grid areas overlay option is off.");
+      ok(!showGridLineNumbers, "Show grid line numbers option is off.");
+      ok(!showInfiniteLines, "Show infinite lines option is off.");
+    }
+  );
+  gridToggle.click();
+  await onHighlighterShown;
+});