MyBB Community Forums

Can anybody tell me what's the name of above theme and how can I got that ?

Can you provide a link to a forum using that theme?

No I haven't any link. I see this screenshot in a plugin preview.

^ @ Prodhan, contact Dark Neo and ask if he has released the theme used on this forum

Edit: I'd suggest to not use many themes on your forum.
three themes should suffice - a dark colored theme, a light colored theme and a mobile theme

Thanks for advice .m.