diff --git a/packages/codemirror/codemirror.mjs b/packages/codemirror/codemirror.mjs
index 4fe51ec93..180ff103e 100644
--- a/packages/codemirror/codemirror.mjs
+++ b/packages/codemirror/codemirror.mjs
@@ -13,7 +13,7 @@ import {
   lineNumbers,
   drawSelection,
 } from '@codemirror/view';
-import { Pattern, repl } from '@strudel/core';
+import { repl, registerControl } from '@strudel/core';
 import { Drawer, cleanupDraw } from '@strudel/draw';
 import { isAutoCompletionEnabled } from './autocomplete.mjs';
 import { isTooltipEnabled } from './tooltip.mjs';
@@ -354,3 +354,12 @@ function s4() {
     .toString(16)
     .substring(1);
 }
+
+/**
+ * Overrides the css of highlighted events. Make sure to use single quotes!
+ * @name markcss
+ * @example
+ * note("c a f e")
+ * .markcss('text-decoration:underline')
+ */
+export const markcss = registerControl('markcss');
diff --git a/packages/codemirror/highlight.mjs b/packages/codemirror/highlight.mjs
index 2f8cb38d3..d333986cc 100644
--- a/packages/codemirror/highlight.mjs
+++ b/packages/codemirror/highlight.mjs
@@ -93,6 +93,7 @@ const miniLocationHighlights = EditorView.decorations.compute([miniLocations, vi
     if (haps.has(id)) {
       const hap = haps.get(id);
       const color = hap.value?.color ?? 'var(--foreground)';
+      const style = hap.value?.markcss || `outline: solid 2px ${color}`;
       // Get explicit channels for color values
       /* 
       const swatch = document.createElement('div');
@@ -114,7 +115,7 @@ const miniLocationHighlights = EditorView.decorations.compute([miniLocations, vi
         to,
         Decoration.mark({
           // attributes: { style: `outline: solid 2px rgba(${channels.join(', ')})` },
-          attributes: { style: `outline: solid 2px ${color}` },
+          attributes: { style },
         }),
       );
     }
diff --git a/packages/codemirror/themes/algoboy.mjs b/packages/codemirror/themes/algoboy.mjs
index fd7db580b..5c6a91b80 100644
--- a/packages/codemirror/themes/algoboy.mjs
+++ b/packages/codemirror/themes/algoboy.mjs
@@ -18,25 +18,25 @@ export default createTheme({
   theme: 'light',
   settings,
   styles: [
-    { tag: t.labelName, color: '#0f380f' },
-    { tag: t.keyword, color: '#0f380f' },
-    { tag: t.operator, color: '#0f380f' },
-    { tag: t.special(t.variableName), color: '#0f380f' },
-    { tag: t.typeName, color: '#0f380f' },
-    { tag: t.atom, color: '#0f380f' },
-    { tag: t.number, color: '#0f380f' },
-    { tag: t.definition(t.variableName), color: '#0f380f' },
-    { tag: t.string, color: '#0f380f' },
-    { tag: t.special(t.string), color: '#0f380f' },
-    { tag: t.comment, color: '#0f380f' },
-    { tag: t.variableName, color: '#0f380f' },
-    { tag: t.tagName, color: '#0f380f' },
-    { tag: t.bracket, color: '#0f380f' },
-    { tag: t.meta, color: '#0f380f' },
-    { tag: t.attributeName, color: '#0f380f' },
-    { tag: t.propertyName, color: '#0f380f' },
-    { tag: t.className, color: '#0f380f' },
-    { tag: t.invalid, color: '#0f380f' },
-    { tag: [t.unit, t.punctuation], color: '#0f380f' },
+    { tag: t.labelName, color: 'inherit' },
+    { tag: t.keyword, color: 'inherit' },
+    { tag: t.operator, color: 'inherit' },
+    { tag: t.special(t.variableName), color: 'inherit' },
+    { tag: t.typeName, color: 'inherit' },
+    { tag: t.atom, color: 'inherit' },
+    { tag: t.number, color: 'inherit' },
+    { tag: t.definition(t.variableName), color: 'inherit' },
+    { tag: t.string, color: 'inherit' },
+    { tag: t.special(t.string), color: 'inherit' },
+    { tag: t.comment, color: 'inherit' },
+    { tag: t.variableName, color: 'inherit' },
+    { tag: t.tagName, color: 'inherit' },
+    { tag: t.bracket, color: 'inherit' },
+    { tag: t.meta, color: 'inherit' },
+    { tag: t.attributeName, color: 'inherit' },
+    { tag: t.propertyName, color: 'inherit' },
+    { tag: t.className, color: 'inherit' },
+    { tag: t.invalid, color: 'inherit' },
+    { tag: [t.unit, t.punctuation], color: 'inherit' },
   ],
 });
diff --git a/packages/codemirror/themes/blackscreen.mjs b/packages/codemirror/themes/blackscreen.mjs
index 5671a6d83..ca67ea9ae 100644
--- a/packages/codemirror/themes/blackscreen.mjs
+++ b/packages/codemirror/themes/blackscreen.mjs
@@ -15,25 +15,25 @@ export default createTheme({
   theme: 'dark',
   settings,
   styles: [
-    { tag: t.labelName, color: 'white' },
-    { tag: t.keyword, color: 'white' },
-    { tag: t.operator, color: 'white' },
-    { tag: t.special(t.variableName), color: 'white' },
-    { tag: t.typeName, color: 'white' },
-    { tag: t.atom, color: 'white' },
-    { tag: t.number, color: 'white' },
-    { tag: t.definition(t.variableName), color: 'white' },
-    { tag: t.string, color: 'white' },
-    { tag: t.special(t.string), color: 'white' },
-    { tag: t.comment, color: 'white' },
-    { tag: t.variableName, color: 'white' },
-    { tag: t.tagName, color: 'white' },
-    { tag: t.bracket, color: 'white' },
-    { tag: t.meta, color: 'white' },
-    { tag: t.attributeName, color: 'white' },
-    { tag: t.propertyName, color: 'white' },
-    { tag: t.className, color: 'white' },
-    { tag: t.invalid, color: 'white' },
-    { tag: [t.unit, t.punctuation], color: 'white' },
+    { tag: t.labelName, color: 'inherit' },
+    { tag: t.keyword, color: 'inherit' },
+    { tag: t.operator, color: 'inherit' },
+    { tag: t.special(t.variableName), color: 'inherit' },
+    { tag: t.typeName, color: 'inherit' },
+    { tag: t.atom, color: 'inherit' },
+    { tag: t.number, color: 'inherit' },
+    { tag: t.definition(t.variableName), color: 'inherit' },
+    { tag: t.string, color: 'inherit' },
+    { tag: t.special(t.string), color: 'inherit' },
+    { tag: t.comment, color: 'inherit' },
+    { tag: t.variableName, color: 'inherit' },
+    { tag: t.tagName, color: 'inherit' },
+    { tag: t.bracket, color: 'inherit' },
+    { tag: t.meta, color: 'inherit' },
+    { tag: t.attributeName, color: 'inherit' },
+    { tag: t.propertyName, color: 'inherit' },
+    { tag: t.className, color: 'inherit' },
+    { tag: t.invalid, color: 'inherit' },
+    { tag: [t.unit, t.punctuation], color: 'inherit' },
   ],
 });
diff --git a/packages/codemirror/themes/bluescreen.mjs b/packages/codemirror/themes/bluescreen.mjs
index eb04c4118..4f5dff2fe 100644
--- a/packages/codemirror/themes/bluescreen.mjs
+++ b/packages/codemirror/themes/bluescreen.mjs
@@ -18,25 +18,25 @@ export default createTheme({
   theme: 'dark',
   settings,
   styles: [
-    { tag: t.labelName, color: 'white' },
-    { tag: t.keyword, color: 'white' },
-    { tag: t.operator, color: 'white' },
-    { tag: t.special(t.variableName), color: 'white' },
-    { tag: t.typeName, color: 'white' },
-    { tag: t.atom, color: 'white' },
-    { tag: t.number, color: 'white' },
-    { tag: t.definition(t.variableName), color: 'white' },
-    { tag: t.string, color: 'white' },
-    { tag: t.special(t.string), color: 'white' },
-    { tag: t.comment, color: 'white' },
-    { tag: t.variableName, color: 'white' },
-    { tag: t.tagName, color: 'white' },
-    { tag: t.bracket, color: 'white' },
-    { tag: t.meta, color: 'white' },
-    { tag: t.attributeName, color: 'white' },
-    { tag: t.propertyName, color: 'white' },
-    { tag: t.className, color: 'white' },
-    { tag: t.invalid, color: 'white' },
-    { tag: [t.unit, t.punctuation], color: 'white' },
+    { tag: t.labelName, color: 'inherit' },
+    { tag: t.keyword, color: 'inherit' },
+    { tag: t.operator, color: 'inherit' },
+    { tag: t.special(t.variableName), color: 'inherit' },
+    { tag: t.typeName, color: 'inherit' },
+    { tag: t.atom, color: 'inherit' },
+    { tag: t.number, color: 'inherit' },
+    { tag: t.definition(t.variableName), color: 'inherit' },
+    { tag: t.string, color: 'inherit' },
+    { tag: t.special(t.string), color: 'inherit' },
+    { tag: t.comment, color: 'inherit' },
+    { tag: t.variableName, color: 'inherit' },
+    { tag: t.tagName, color: 'inherit' },
+    { tag: t.bracket, color: 'inherit' },
+    { tag: t.meta, color: 'inherit' },
+    { tag: t.attributeName, color: 'inherit' },
+    { tag: t.propertyName, color: 'inherit' },
+    { tag: t.className, color: 'inherit' },
+    { tag: t.invalid, color: 'inherit' },
+    { tag: [t.unit, t.punctuation], color: 'inherit' },
   ],
 });
diff --git a/packages/codemirror/themes/terminal.mjs b/packages/codemirror/themes/terminal.mjs
index 90c6e1d25..a5b4506fd 100644
--- a/packages/codemirror/themes/terminal.mjs
+++ b/packages/codemirror/themes/terminal.mjs
@@ -14,24 +14,24 @@ export default createTheme({
   theme: 'dark',
   settings,
   styles: [
-    { tag: t.labelName, color: '#41FF00' },
-    { tag: t.keyword, color: '#41FF00' },
-    { tag: t.operator, color: '#41FF00' },
-    { tag: t.special(t.variableName), color: '#41FF00' },
-    { tag: t.typeName, color: '#41FF00' },
-    { tag: t.atom, color: '#41FF00' },
-    { tag: t.number, color: '#41FF00' },
-    { tag: t.definition(t.variableName), color: '#41FF00' },
-    { tag: t.string, color: '#41FF00' },
-    { tag: t.special(t.string), color: '#41FF00' },
-    { tag: t.comment, color: '#41FF00' },
-    { tag: t.variableName, color: '#41FF00' },
-    { tag: t.tagName, color: '#41FF00' },
-    { tag: t.bracket, color: '#41FF00' },
-    { tag: t.meta, color: '#41FF00' },
-    { tag: t.attributeName, color: '#41FF00' },
-    { tag: t.propertyName, color: '#41FF00' },
-    { tag: t.className, color: '#41FF00' },
-    { tag: t.invalid, color: '#41FF00' },
+    { tag: t.labelName, color: 'inherit' },
+    { tag: t.keyword, color: 'inherit' },
+    { tag: t.operator, color: 'inherit' },
+    { tag: t.special(t.variableName), color: 'inherit' },
+    { tag: t.typeName, color: 'inherit' },
+    { tag: t.atom, color: 'inherit' },
+    { tag: t.number, color: 'inherit' },
+    { tag: t.definition(t.variableName), color: 'inherit' },
+    { tag: t.string, color: 'inherit' },
+    { tag: t.special(t.string), color: 'inherit' },
+    { tag: t.comment, color: 'inherit' },
+    { tag: t.variableName, color: 'inherit' },
+    { tag: t.tagName, color: 'inherit' },
+    { tag: t.bracket, color: 'inherit' },
+    { tag: t.meta, color: 'inherit' },
+    { tag: t.attributeName, color: 'inherit' },
+    { tag: t.propertyName, color: 'inherit' },
+    { tag: t.className, color: 'inherit' },
+    { tag: t.invalid, color: 'inherit' },
   ],
 });
diff --git a/packages/codemirror/themes/whitescreen.mjs b/packages/codemirror/themes/whitescreen.mjs
index 5abbb1ea9..ff860537b 100644
--- a/packages/codemirror/themes/whitescreen.mjs
+++ b/packages/codemirror/themes/whitescreen.mjs
@@ -16,24 +16,24 @@ export default createTheme({
   theme: 'light',
   settings,
   styles: [
-    { tag: t.labelName, color: 'black' },
-    { tag: t.keyword, color: 'black' },
-    { tag: t.operator, color: 'black' },
-    { tag: t.special(t.variableName), color: 'black' },
-    { tag: t.typeName, color: 'black' },
-    { tag: t.atom, color: 'black' },
-    { tag: t.number, color: 'black' },
-    { tag: t.definition(t.variableName), color: 'black' },
-    { tag: t.string, color: 'black' },
-    { tag: t.special(t.string), color: 'black' },
-    { tag: t.comment, color: 'black' },
-    { tag: t.variableName, color: 'black' },
-    { tag: t.tagName, color: 'black' },
-    { tag: t.bracket, color: 'black' },
-    { tag: t.meta, color: 'black' },
-    { tag: t.attributeName, color: 'black' },
-    { tag: t.propertyName, color: 'black' },
-    { tag: t.className, color: 'black' },
-    { tag: t.invalid, color: 'black' },
+    { tag: t.labelName, color: 'inherit' },
+    { tag: t.keyword, color: 'inherit' },
+    { tag: t.operator, color: 'inherit' },
+    { tag: t.special(t.variableName), color: 'inherit' },
+    { tag: t.typeName, color: 'inherit' },
+    { tag: t.atom, color: 'inherit' },
+    { tag: t.number, color: 'inherit' },
+    { tag: t.definition(t.variableName), color: 'inherit' },
+    { tag: t.string, color: 'inherit' },
+    { tag: t.special(t.string), color: 'inherit' },
+    { tag: t.comment, color: 'inherit' },
+    { tag: t.variableName, color: 'inherit' },
+    { tag: t.tagName, color: 'inherit' },
+    { tag: t.bracket, color: 'inherit' },
+    { tag: t.meta, color: 'inherit' },
+    { tag: t.attributeName, color: 'inherit' },
+    { tag: t.propertyName, color: 'inherit' },
+    { tag: t.className, color: 'inherit' },
+    { tag: t.invalid, color: 'inherit' },
   ],
 });
diff --git a/test/__snapshots__/examples.test.mjs.snap b/test/__snapshots__/examples.test.mjs.snap
index a3419e98d..3ad6ea01e 100644
--- a/test/__snapshots__/examples.test.mjs.snap
+++ b/test/__snapshots__/examples.test.mjs.snap
@@ -4551,6 +4551,27 @@ exports[`runs examples > example "lsize" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "markcss" example index 0 1`] = `
+[
+  "[ 0/1 → 1/4 | note:c ]",
+  "[ 1/4 → 1/2 | note:a ]",
+  "[ 1/2 → 3/4 | note:f ]",
+  "[ 3/4 → 1/1 | note:e ]",
+  "[ 1/1 → 5/4 | note:c ]",
+  "[ 5/4 → 3/2 | note:a ]",
+  "[ 3/2 → 7/4 | note:f ]",
+  "[ 7/4 → 2/1 | note:e ]",
+  "[ 2/1 → 9/4 | note:c ]",
+  "[ 9/4 → 5/2 | note:a ]",
+  "[ 5/2 → 11/4 | note:f ]",
+  "[ 11/4 → 3/1 | note:e ]",
+  "[ 3/1 → 13/4 | note:c ]",
+  "[ 13/4 → 7/2 | note:a ]",
+  "[ 7/2 → 15/4 | note:f ]",
+  "[ 15/4 → 4/1 | note:e ]",
+]
+`;
+
 exports[`runs examples > example "mask" example index 0 1`] = `
 [
   "[ 0/1 → 1/4 | note:c ]",
diff --git a/test/runtime.mjs b/test/runtime.mjs
index 19b716274..a8f37a34e 100644
--- a/test/runtime.mjs
+++ b/test/runtime.mjs
@@ -134,6 +134,9 @@ strudel.Pattern.prototype._pitchwheel = function () {
 strudel.Pattern.prototype._pianoroll = function () {
   return this;
 };
+strudel.Pattern.prototype.markcss = function () {
+  return this;
+};
 
 const uiHelpersMocked = {
   backgroundImage: id,
diff --git a/website/src/pages/learn/visual-feedback.mdx b/website/src/pages/learn/visual-feedback.mdx
index 25eae30ce..ec275c6e2 100644
--- a/website/src/pages/learn/visual-feedback.mdx
+++ b/website/src/pages/learn/visual-feedback.mdx
@@ -98,3 +98,7 @@ What follows is the API doc of all the options you can pass:
 ## Pitchwheel
 
 <JsDoc client:idle name="pitchwheel" h={0} />
+
+## markcss
+
+<JsDoc client:idle name="markcss" h={0} />