Change color of split character between statusline

[DaitiDay]

First of all, great plugin 😄
Configuring the statusline I've encountered a problem: between the statuslines of two buffers (NvimTree and an opened file in the picture) there is what I think is the split character. Is there a way to change its color?

[johnybx]

I was looking for similar thing and found this #158 comment which resolved this problem for me between normal split windows.

[DaitiDay]

I'll give it a try 😄 Thank you 😄