diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index f624e670705..7f5f15a1a58 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -225,17 +225,17 @@ Categorizes a tag under a defined category.
 Format: `cattag t/TAG [t/MORE_TAGS]…​ CATEGORY`
 
 * Sets the tag(s) in CampusConnect with the specified name `TAG` to fall under the specified `CATEGORY`.
-  * Currently available categories with their respective keywords and colors are:
+* 
+* Currently available categories with their respective keywords and colours are:
 
-| Category      | Keyword (case sensitive) | Color |
-|---------------|--------------------------|-------|
-| **General**   | `general`                | Gray  |
-| **Academics** | `acads`                  | Gold  |
-| **Activities**| `activity`               | Blue  |
-| **Networking**| `network`                | Green |
-| **Mentorship**| `mentor`                 | Pink  |
+    Category      | Keyword (case sensitive) | Colour
+    --------------|--------------------------|-  
+    **General**   | `general`                | <span style="color:DarkGray"> Grey </span>
+    **Academics** | `acads`                  | <span style="color:Gold"> Gold </span>
+    **Activities**| `activity`               | <span style="color:DodgerBlue"> Blue </span>
+    **Networking**| `network`                | <span style="color:LimeGreen"> Green </span>          
+    **Mentorship**| `mentor`                 | <span style="color:HotPink"> Pink </span>
 
-* All tags are categorized `General` by default.
 * Multiple tags can be categorized to the same category at a time.
 * All tags specified must be valid existing tags.
 * Attempts to set a tag to its current category will cause the whole command to be rejected.
diff --git a/src/main/java/seedu/address/logic/commands/CategorizeTagCommand.java b/src/main/java/seedu/address/logic/commands/CategorizeTagCommand.java
index 6f6534f04e8..0e5b9453a17 100644
--- a/src/main/java/seedu/address/logic/commands/CategorizeTagCommand.java
+++ b/src/main/java/seedu/address/logic/commands/CategorizeTagCommand.java
@@ -25,7 +25,7 @@ public class CategorizeTagCommand extends Command {
             + "Parameters: " + PREFIX_TAG + "TAG (at least one existing tag label) CATEGORY\n"
             + "Example: " + COMMAND_WORD + " " + PREFIX_TAG + "CS1101S acads";
 
-    public static final String MESSAGE_CAT_TAG_SUCCESS = "Category of tag %1$s has been changed successfully.";
+    public static final String MESSAGE_CAT_TAG_SUCCESS = "Category of tag(s) %1$s has been changed successfully.";
     public static final String MESSAGE_TAG_NOT_EXIST = "Tag not found: %1$s";
     public static final String MESSAGE_INVALID_CATEGORY = "Invalid category: %1$s";
     public static final String MESSAGE_DUPLICATE_CATEGORY = "Current category of %s is already %s";
@@ -58,17 +58,19 @@ public CommandResult execute(Model model) throws CommandException {
             model.refreshCampusConnect();
         }
 
-        String targetTagsResult = targetTags.stream()
-                .map(x -> x.toString())
-                .collect(Collectors.joining(", "));
-
-        return new CommandResult(String.format(MESSAGE_CAT_TAG_SUCCESS, targetTagsResult));
+        String formattedTags = formatTags(targetTags);
+        return new CommandResult(String.format(MESSAGE_CAT_TAG_SUCCESS, formattedTags));
     }
 
     private boolean isDuplicateCategory(TagCategory cat) {
         return updatedCategory.equals(cat);
     }
 
+    private String formatTags(List<Tag> tags) {
+        String result = tags.toString();
+        return result.substring(1, result.length() - 1);
+    }
+
     @Override
     public boolean equals(Object other) {
         if (other == this) {