added "note color"

src/public/app/services/css_class_manager.js

@@ -0,0 +1,27 @@
+const registeredClasses = new Set();
+
+function createClassForColor(color) {
+    if (!color?.trim()) {
+        return "";
+    }
+
+    const normalizedColorName = color.replace(/[^a-z0-9]/gi, "");
+
+    if (!normalizedColorName.trim()) {
+        return "";
+    }
+
+    const className = 'color-' + normalizedColorName;
+
+    if (!registeredClasses.has(className)) {
+        $("head").append(`<style>.${className} { color: ${color} !important; }</style>`);
+
+        registeredClasses.add(className);
+    }
+
+    return className;
+}
+
+export default {
+    createClassForColor
+};