[M] Change folded gutter background color
[M] Change folded gutter background color

MiincGu/dark-bint-syntax,Murriouz/dark-bint-syntax,Murriouz/dark-bint-syntax,MiincGu/dark-bint-syntax,Murriouz/dark-bint-syntax,Murriouz/dark-bint-syntax,MiincGu/dark-bint-syntax,MiincGu/dark-bint-syntax,MiincGu/dark-bint-syntax,MiincGu/dark-bint-syntax,Murriouz/dark-bint-syntax,Murriouz/dark-bint-syntax