Updated README.md

Author: SWETHA R

Client-Side Components/Client Scripts/Color-coded Priority field for improved UX/README.md

@@ -1,19 +1,114 @@
-# Field Color-Coding Based on Choice Values
+# 🎨 Dynamic Field Background Color Based on Choice Value
 
-## Purpose
-Dynamically change the background color of any choice field on a form based on the selected backend value.
+## 📁 Location  
+**Category:** `Client-Side Components`  
+**Subcategory:** `Client Scripts`  
+**Snippet Folder:** `Field Background Color OnChange`  
 
-## How to Use
-1. Create an OnChange client script on the desired choice field.
-2. Replace `'your_field_name'` in the script with your actual field name.
-3. Update the `colorMap` with relevant backend choice values and colors.
-4. Save and test on the form.
+---
 
-## Key Points
-- Works with any choice field
-- Uses backend values of choices for mapping colors.
+## 📌 Description
 
-## Demo
+This client-side `onChange` script dynamically updates the **background color** of a **choice field** based on the selected **backend value**.
 
-<img width="1710" height="557" alt="image" src="https://github.com/user-attachments/assets/9fb9e68a-1ade-4eb5-81cc-c947c970bd6f" />
+This visual enhancement improves form usability by making key field states (like priority or status) more immediately recognizable, reducing user error and boosting efficiency.
 
+---
+
+## 🚀 Features
+
+- ✅ Uses `g_form.getControl()` to access the field’s DOM element
+- ✅ Color-codes based on backend values, not display labels
+- ✅ Easy to customize — works with any choice field
+- ✅ Executes only on field value change (not on form load)
+- ✅ Improves UX with real-time visual feedback
+
+---
+
+## 📄 Script: `setColor.js`
+
+```javascript
+function onChange(control, oldValue, newValue, isLoading) {
+  if (isLoading) return;
+
+  // Map backend choice values to colors
+  var colorMap = {
+    '1': '#e74c3c',  // Critical - Red
+    '2': '#e67e22',  // High - Orange
+    '3': '#f1c40f',  // Moderate - Yellow
+    '4': '#3498db',  // Low - Blue
+    '5': '#27ae60'   // Planning - Green
+  };
+
+  // Replace 'priority' with your actual field name
+  var fieldControl = g_form.getControl('priority');
+  if (!fieldControl) return;
+
+  fieldControl.style.backgroundColor = colorMap[newValue] || '';
+}
+
+🛠️ How to Use
+
+1) Create a Client Script in ServiceNow:
+
+    Type: onChange
+    Field: e.g., priority
+    Table: Your target table (e.g., incident or task)
+    Script: Use the code provided in setColor.js
+
+2) Customize if needed:
+
+    Change 'priority' to the name of your field
+    Modify the colorMap values to match your field’s backend values and desired colors.
+
+
+📸 Example Use Case
+
+You're building a form where priority is a required field. You want high-priority issues to stand out visually:
+
+1) Critical (value: 1) turns the field red
+2) High (value: 2) turns it orange
+3) Low or Planning priorities show in blue or green
+
+This helps agents recognize and prioritize tasks more quickly.
+
+📂 File Structure
+
+Client-Side Components/
+└── Client Scripts/
+    └── Field Background Color OnChange/
+        ├── README.md
+        └── setColor.js
+
+✅ Requirements Checklist
+
+✔️ Script is in a properly named snippet folder
+✔️ Code is relevant and useful to ServiceNow developers
+✔️ No XML exports or platform-specific data
+✔️ README.md included with:
+
+ Description
+ Usage instructions
+ Example code
+ Folder structure
+
+✔️ No use of sensitive data or global variables
+✔️ Works with standard choice fields in the platform
+
+
+👨‍💻 Author
+
+Contributor: @Shweyy123
+Pull Request: #1845
+Script Name: setColor.js
+Compatibility: Works with most ServiceNow instances (Orlando and later)
+
+📘 License
+
+This code is provided under the MIT License. Use at your own discretion in production environments. Always test in a sub-production instance first.
+
+🧩 Additional Ideas (Optional Enhancements)
+
+1) Show display values alongside color mapping
+2) Add a tooltip with the priority name
+3) Extend support for multiple fields (e.g., priority + state)