Choose A Style bar is enabled for you to choose theme color that fit with your website layout.

 

Access: Webstore -> Templates -> Settings

Once you have decided the theme color, you can update it at Default Theme Color.

After that, please disable Choose A Style bar by untick Show option from Color Themes, since it is inappropriate to show as a professional website.

After you done the changes, click Save button and Clear Cache button to reflect on your website.