cycle through colorschemes in vim and switch to light theme for specific themes. Bound alt-c to cycle.

cyclethemes.vim

let s:mycolors = ['deus', 'gruvbox', 'onedark']  " colorscheme names that we use to set color

function! NextColor()
  call s:NextColor()
endfunction

function! s:NextColor()
  let current = index(s:mycolors, g:colors_name)
  let go_next = 1
  if index(['gruvbox'], g:colors_name) >= 0
    if &background == 'dark'
      let go_next = 0
      execute 'set bg=light'
    endif
  endif
  if go_next
      execute 'set bg=dark'
      execute 'colorscheme ' .s:mycolors[(current+1) % len(s:mycolors)]
  endif
endfunction

nnoremap <a-c> :call NextColor()<CR>