Far Manager with FarColorer plugin How to change change editor background color?

I use Far Manager 3.0 under Windows 10 x64, with Far Colorer plugin to highlight syntax ( in particular, in LaTex). Suddenly the Editor background change color from the usual blue to white; I think I have not changed any settings. By background I mean the whole screen, i.e, the area without any text ( past the end of line or end of file), i.e if I open an empty file, I see a white screen with no text . How doI change the editor background color = whole sxreen, area without text (empty file), which used to be blue?