Pretty sure it's a premium theme by Envira.
(2015-09-15, 02:45 PM).m. Wrote: [ -> ]see LIB - Life Is Beautiful Free theme - 1.0
note: it was made for MyBB 1.6.x - doesn't work fine for MyBB 1.8.x
Thanks, I've managed to fix a bunch of things but some important things don't work yeah :/