diff --git a/conversejs/lib/converse-params.ts b/conversejs/lib/converse-params.ts
index cbf28ed8..2454c02c 100644
--- a/conversejs/lib/converse-params.ts
+++ b/conversejs/lib/converse-params.ts
@@ -94,7 +94,7 @@ function defaultConverseParams (
 
     prune_messages_above: 100, // only keep 100 message in history.
     pruning_behavior: 'unscrolled',
-    colorize_username: true,
+    colorize_username: false,
     send_chat_markers: [],
     reuse_scram_keys: false, // for now we don't use this.