\lstdefinelanguage{lJson}{
otherkeywords = {},
alsoletter={},
comment=[l]{\#},
comment=[l]{//},
sensitive=true,
moredelim=**[is][{\xlsthlbox{xlstwarning}}]{|warn|}{|warn|},
moredelim=**[is][{\xlsthlboxd{\xlstcustom}}]{|custom|}{|custom|},
moredelim=[is][{}]{|plain|}{|plain|},
morestring=[s]{"}{"},
morekeywords = [2]{true,false,null},
morestring=[b]',
alsoother={\,}
}

\RegisterLanguage{json}{lJson}