vim colorschemes not changing background color

Question

I try to apply various color schemes in vim that I have seen on the net. Whatever scheme I choose, the background remains white, even though screenshots of the applied scheme sh

Answer 1

This works for me for switching backgrounds:

colorscheme hemisu
function! g:ToggleBackground()
  if &background != 'dark'
    set background=dark
  else
    set background=light
    colorscheme hemisu
  endif
endfunction
nnoremap   :call g:ToggleBackground()

Also try setting light background to something like ctermbg=231, so that tmux handles it better.