diff --git a/src/main/java/org/ntlab/amaryllis/server/entities/Category.java b/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
index 6c9997f..fdd70c4 100644
--- a/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
+++ b/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
@@ -5,8 +5,11 @@
 public class Category {
     private String cid;
     private String name;
-    private Color color;
-    public Category(String cid,String name,Color color){
+    /**
+     * 文字列表現された色情報
+     */
+    private String color;
+    public Category(String cid,String name,String color){
         this.cid=cid;
         this.name=name;
         this.color=color;
@@ -19,7 +22,7 @@
     public String getName() {
         return name;
     }
-    public Color getColor(){
+    public String getColor(){
         return color;
     }
     public void setCid(String cid) {
@@ -30,7 +33,7 @@
         this.name = name;
     }
 
-    public void setColor(Color color) {
+    public void setColor(String color) {
         this.color = color;
     }
 
diff --git a/src/main/java/org/ntlab/amaryllis/server/models/Categories.java b/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
index fa35513..db70806 100644
--- a/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
+++ b/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
@@ -1,9 +1,11 @@
 package org.ntlab.amaryllis.server.models;
 
 import org.ntlab.amaryllis.server.entities.Category;
+import org.ntlab.amaryllis.server.entities.Voicememo;
 
 import java.awt.*;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.Set;
 
@@ -19,17 +21,33 @@
         }
         return  theInstance;
     }
-    private void addCategory(String cid, String name, Color color){
-        categoryHashMap.put(cid,new Category(cid,name,color));
-    }
     /**
      * インスタンス生成を禁止するコンストラクタ
      */
     private Categories(){
         categoryHashMap =new HashMap<String, Category>();
         {
-            addCategory("","",new Color(1,1,1));
+            addCategory("c01","Music","#0000FF");
+            addCategory("c02","Travel","#FF0000");
         }
+
+        /**
+         *テスト用コード
+         */
+        {
+
+        }
+
+    }
+
+    /**
+     * カテゴリを追加するメソッド。
+     * @param cid　カテゴリのcid
+     * @param name　カテゴリの名前
+     * @param color　カテゴリの色
+     */
+    private void addCategory(String cid, String name, String color){
+        categoryHashMap.put(cid,new Category(cid,name,color));
     }
 
     /**
@@ -41,6 +59,12 @@
     }
 
     /**
+     * 持っているカテゴリを全て取得するメソッド
+     * @return　持っているカテゴリのハッシュマップ
+     */
+    public HashMap<String,Category> getHashMap(){return categoryHashMap;}
+
+    /**
      * cidからカテゴリを返すメソッド
      * @param cid　カテゴリのcid
      * @return cidと対応したカテゴリ
@@ -49,4 +73,5 @@
         return categoryHashMap.get(cid);
     }
 
-}
+
+}
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/amaryllis/server/tests/ModelsInterface.java b/src/main/java/org/ntlab/amaryllis/server/tests/ModelsInterface.java
new file mode 100644
index 0000000..b60be9a
--- /dev/null
+++ b/src/main/java/org/ntlab/amaryllis/server/tests/ModelsInterface.java
@@ -0,0 +1,8 @@
+package org.ntlab.amaryllis.server.tests;
+
+import java.util.HashMap;
+
+public interface ModelsInterface<Entity> {
+    public HashMap<String,Entity> getHashMap();
+
+}