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)

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

The default MyBB theme with inverted colors blue and black.

Free dark flat 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.

Cheater theme, very basic and my first theme.

Darkness Theme for MyBB 1.8.x.

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

Impulse Dark is the sister theme of Simple MyBB Variant Theme

Inferno theme for mybb

A very simple black and grey efficient theme and template. Easy on the eyes, useful member block controls. A great theme if you want users to spend lots of time on the forum.

BLUX - A nice & simple flat theme for MyBB.

Dark and responsive theme for MyBB 1.8 by Marihunaen.

This is a great theme for hacking sites

ElwitchTheme is a theme for your mybb forum.

This dark SC Editor style can be useful for forums with dark themes

A darkness bassed default theme.

BlackPlayers Theme for MyBB 1.8.x.