Add basic box background to OsuPlayfield.
Add basic box background to OsuPlayfield.


NeoAdonis/osu,smoogipoo/osu,theguii/osu,NeoAdonis/osu,Nabile-Rahmani/osu,2yangk23/osu,peppy/osu,Drezi126/osu,ppy/osu,peppy/osu-new,ZLima12/osu,NotKyon/lolisu,naoey/osu,peppy/osu,ppy/osu,DrabWeb/osu,EVAST9919/osu,default0/osu,Damnae/osu,DrabWeb/osu,smoogipoo/osu,NeoAdonis/osu,ppy/osu,naoey/osu,DrabWeb/osu,smoogipoo/osu,2yangk23/osu,johnneijzen/osu,johnneijzen/osu,ZLima12/osu,EVAST9919/osu,UselessToucan/osu,nyaamara/osu,RedNesto/osu,osu-RP/osu-RP,UselessToucan/osu,smoogipooo/osu,Frontear/osuKyzer,UselessToucan/osu,peppy/osu,naoey/osu,tacchinotacchi/osu