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

Free Responsive MyBB Theme - NetPen

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

Darkness Theme for MyBB 1.8.x.

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

Inferno theme for mybb

Cheater theme, very basic and my first theme.

BlackPlayers Theme for MyBB 1.8.x.

Impulse Dark is the sister theme of Simple MyBB Variant Theme

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.

The default MyBB theme with inverted colors blue and black.

Free dark flat theme

Cool little theme by Lunorian

Dark Night is a modified dark version of the default ACP Theme

Mybb Tema DarkBlue (ColdFrm) Güzel Bir Tema Dır Pişman Olmıcaksınız.

Dark and responsive theme for MyBB 1.8 by Marihunaen.

A darkness bassed default theme.

ElwitchTheme is a theme for your mybb forum.

Add a dark color for your Default theme

Updated version of Audentio GamingJam theme.