Showing a different background colour in Vim past 80 characters

Question

I have seen Vim 80 column layout concerns, but the answer there highlights only actual content that goes over the 80 character mark. I want to have a 100+ column Vim window

Answer 1

For those using onedark.vim like me that wants a solution posted by Conner, I added these lines to my vimrc file

let &colorcolumn=join(range(1,80),",")
let g:onedark_color_overrides = {
  \ "black": {"gui": "#2C323C", "cterm": "236", "cterm16": "8"},
  \ "cursor_grey": {"gui": "#282C34", "cterm": "235", "cterm16": "0"}
  \ }

I just swapped the two values, took it from the source code of onedark