diff --git a/app/src/main/java/com/example/citrusclient/views/MyBookshelfAdapter.java b/app/src/main/java/com/example/citrusclient/views/MyBookshelfAdapter.java
index 3a9418f..145a274 100644
--- a/app/src/main/java/com/example/citrusclient/views/MyBookshelfAdapter.java
+++ b/app/src/main/java/com/example/citrusclient/views/MyBookshelfAdapter.java
@@ -33,6 +33,7 @@
     public void onBindViewHolder(@NonNull MyBookViewHolder holder, int position) {
         MyBookshelfFragment.RowBook bookData = this.bookList.get(position);
         holder.bookButton.setText(bookData.hogeTitle);
+        holder.bookButton.setBackgroundColor(bookData.color);
     }
 
     @Override
diff --git a/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java b/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java
index 4b26253..1875d4c 100644
--- a/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java
+++ b/app/src/main/java/com/example/citrusclient/views/MyBookshelfFragment.java
@@ -1,5 +1,6 @@
 package com.example.citrusclient.views;
 
+import android.graphics.Color;
 import android.media.Image;
 import android.os.Bundle;
 
@@ -108,9 +109,10 @@
 
     private List<RowBook> createBooks(){
         List<RowBook> books = new ArrayList<>();
-        for(int i = 0; i < 2; i++){
+        for(int i = 0; i < 5; i++){
             RowBook book = new RowBook();
             book.hogeTitle = "hoge";
+            book.color = Color.RED;
             books.add(book);
         }
         return books;
@@ -118,6 +120,7 @@
 
     class RowBook{
         String hogeTitle;
+        int color;
     }
 
 }
\ No newline at end of file