Preferenceからもフォルダーの色の選択ができる。

lib/components/modal/Preference/FolderSettingTab.js

@@ -59,7 +59,8 @@ export default class FolderSettingTab extends React.Component {
           <div className='sectionTitle'>Manage folder</div>
           <div className='folderTable'>
             <div className='folderHeader'>
-              <div className='folderName'>Folder name</div>
+              <div className='folderColor'></div>
+              <div className='folderName'>Folder</div>
               <div className='folderControl'>Edit/Delete</div>
             </div>
             {folderElements}