Developing a new look for WordPress is a relatively simple task, as long as you know some CSS/HTML basics.
I don’t know how to create beautiful graphics, so I only used simple colors and simple transitions. Totally three blue colors were used, from light to dark. I especially like the sidebar border :) . The ripples mark the beginnings of entries. I discarded the CSS list types but used background images to achieve this effect.
Thanks to the simple structure of WordPress, it didn’t take me much time to make this theme. Of course I will tailor it in the future to make it better-looking.