PluginsPoint

This plugin was developed with CSS and JS with no images or icons. It is pure CSS and the icons can be easily customized by its shape, size and color.
Live Preview: http://kentothemes.com/plugin_demo/
Plugin Features
Change Shape of the icon
Change the color of the shape
Change the size of the shape
Modify the duration of the loader

Kento Lazy Page Loader

Use Kento Lazy Page Loader and beatify your loading icon while your viewer waits for your website to load.

parisvega

Make clickable things look clickable. Button It Up changes the upload/insert button style to look like an actual button, making the button more findable for first-time WordPress users.
Read more about the reasoning behind this simple UI change and the beneifits to the end user: http://www.parisvega.com/if-ya-wanna-click-it-ya-better-put-a-button-it/

Button It Up

Button It Up changes the upload/insert button style to look like an actual button.

Kento Lazy Page Loader vs Button It Up