diff --git a/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java b/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
index 6341d75..cf3450a 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
@@ -55,6 +55,7 @@
             Account account = new Account(accountId, password);
             accounts.put(accountId, account);
             accountToken.put(accountId, token); //accountIDとtokenをHashMapに入れる
+            accounts.get(accountId).setAccountColor("D5D5D5");
             return token;
         } else {
             return null;