This is simple siteclosed page with blue login box for those who have XOOPS with restricted access ( eg: intranet portal ). Photoshop, HTML & CSS files provided by psdgraphics.com.
Download customized siteclosed page from here then upload /images, /modules and login-box.css to your theme folder.
To change the background color, download PSD file from here, then edit PSD file with Photoshop.