diff --git a/demo/51-character-styles.ts b/demo/51-character-styles.ts
new file mode 100644
index 0000000000..3230a7c86f
--- /dev/null
+++ b/demo/51-character-styles.ts
@@ -0,0 +1,37 @@
+// Custom character styles using JavaScript configuration
+// Import from 'docx' rather than '../build' if you install from npm
+import * as fs from "fs";
+import { Document, Packer, Paragraph, TextRun } from "../build";
+
+const doc = new Document({
+    styles: {
+        characterStyles: [
+            {
+                id: "myRedStyle",
+                name: "My Wonky Style",
+                basedOn: "Normal",
+                run: {
+                    color: "990000",
+                    italics: true,
+                },
+            },
+        ],
+    },
+});
+
+doc.addSection({
+    children: [
+        new Paragraph({
+            children: [
+                new TextRun({
+                    text: "Foo bar",
+                    style: "myRedStyle",
+                }),
+            ],
+        }),
+    ],
+});
+
+Packer.toBuffer(doc).then((buffer) => {
+    fs.writeFileSync("My Document.docx", buffer);
+});