diff --git a/src/main/java/org/ntlab/citrusserver/entities/Account.java b/src/main/java/org/ntlab/citrusserver/entities/Account.java
index 0567713..89d28bf 100644
--- a/src/main/java/org/ntlab/citrusserver/entities/Account.java
+++ b/src/main/java/org/ntlab/citrusserver/entities/Account.java
@@ -11,6 +11,9 @@
     @JsonIgnore
     private String password;
 
+    @JsonIgnore//////
+    private String accountColor;
+
     public Account(String aid, String pass) {
         accountId = aid;
         password = pass;
@@ -32,4 +35,7 @@
     public void setPassword(String p) {password = p;}
     public String getPassword() {return password;}
 
+    @JsonIgnore
+    public void setAccountColor(String a) {accountColor = a;}
+    public String getAccountColor() {return accountColor;}
 }
diff --git a/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java b/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
index 751131f..4f5d087 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/AccountManager.java
@@ -105,7 +105,22 @@
             accounts.get(accountId).setIntroduction(introduction);
         }
     }
+    ///////////
+    // accountの色を返す(GET)
+    public String getAccountColor(String accountId){
+        if(accounts.containsKey(accountId)) { //アカウントがあるかを確認
+            return accounts.get(accountId).getAccountColor();
+        }
+        return null;
+    }
 
+    // accountの色を変更する(PUT)
+    public void changeAccountColor(String accountId, String newColor, String token){
+        if(accountToken.get(accountId).equals(token)) { //token比較
+            accounts.get(accountId).setAccountColor(newColor);
+        }
+    }
+    ////////////
 
     // アカウントidとパスワードでログインし、tokenを返す (POST)
     public String login(String accountId, String password) {
diff --git a/src/main/java/org/ntlab/citrusserver/resources/AccountsRest.java b/src/main/java/org/ntlab/citrusserver/resources/AccountsRest.java
index 2a74ab0..1e38ea0 100644
--- a/src/main/java/org/ntlab/citrusserver/resources/AccountsRest.java
+++ b/src/main/java/org/ntlab/citrusserver/resources/AccountsRest.java
@@ -136,16 +136,41 @@
         var response = Response.status(Response.Status.FORBIDDEN).entity("認証失敗");//forbiddenは403
         throw new WebApplicationException(response.build());
     }
-/////////
-//    @Path("/{account_id}/photo")
-//    //画像を返す
-//    @GET
-//    public String getAccount(@PathParam("account_id") String accountId){
-//        Account ac = accountManager.getAccount(accountId);
-//        return ac.getPhoto();
-//    }
-//    @Path("/{account_id}/photo")
-//    @PUT
+
+
+    ///////////(9/26)
+    // accountの色を返す(GET)
+    @Path("/{account_id}/accountColor")
+    @GET
+    public String getAccountColor(@PathParam("account_id") String accountId){
+        String accountColor = accountManager.getAccountColor(accountId);
+        return accountColor;
+    }
+
+    //accountの色を変更する(PUT)
+    @Path("/{account_id}/accountColor")
+    @PUT
+    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)//bodyに入力する値がある時
+    public void changeAccountColor(@PathParam("account_id") String accountId,
+                                   @FormParam("accountColor")String accountColor,
+                                   @FormParam("token") String token){
+        //404
+        if (!accountManager.getAccountsID().contains(accountId)){ //account_idが存在しない時
+            var response = Response.status(Response.Status.NOT_FOUND).entity("IDが存在しません");//404
+            throw new WebApplicationException(response.build());
+        }
+        //成功
+        if(accountManager.checkToken(accountId, token)) {
+            accountManager.changeAccountColor(accountId, accountColor, token);
+            return;
+        }
+
+        //403
+        var response = Response.status(Response.Status.FORBIDDEN).entity("認証失敗");//forbiddenは403
+        throw new WebApplicationException(response.build());
+    }
+    ///////////////////
+
 
 //////////
 // お気に入りの本のbook_idを削除する (DELETE)