Reproduce Procedures
" File: $XDG_CONFIG_HOME/nvim/test.vim
" OS: linux v5.4.13
" Vi: nvim v0.4.3
" Py: cpython v3.6.10
" Term: guake v3.7.0
set runtimepath=$VIMRUNTIME,$GITHUBWORKSPACE/neoclide/coc.nvim
set termguicolors
" vi -u $XDG_CONFIG_HOME/nvim/test.vim
ired<Esc>
the word red will become red.
:colorscheme default<CR>
the word red will lose its color.