Giving your forum an entirely new look and feel is easy — just download one of these great themes! There are even themes for the admin control panel.
Projects in Dark

A sleek and modern SCEditor theme

Fully responsive, modern & multicolor theme for MyBB 1.8 (Documentation included)

Responsive Modern Mybb Themes

Responsive Modern Mybb Themes

Dark theme based from Default MyBB theme

A flat and simple responsive premium theme for free!

ElwitchTheme is a theme for your mybb forum.

Elusive is a clean and elegant Flat MyBB theme which can be used by all sort of community users. Elusive is a mobile-friendly, fully responsive theme for MyBB 1.8.11, optimised for performance.

Default theme but more contrast, mobile friendly, spacing between posts; free of banners etc
这是一个中文版的Emerald Dark主题,主要用于解决部分中文用户在使用本模板过程中遇到的翻译错误

The default MyBB theme with inverted colors blue and black.

Updated version of Audentio GamingJam theme.
Purple & Black modded ACP Theme

Elegant, General dark and light theme for mybb

Cool little theme by Lunorian

MyBB Dark is a twist of the default MyBB theme in that everything is darkened.

Dark and responsive theme for MyBB 1.8 by Marihunaen.

Classy, elegant and responsive dark theme for MyBB

Free Responsive MyBB Theme - NetPen