Use autocmd to keep IndentGuides* working.

.vim/vimrc

@@ -36,8 +36,8 @@ let g:DisableAutoPHPFolding = 1
 let g:EditorConfig_exclude_patterns = ['fugitive://.*', 'scp://.*']
 let g:indent_guides_auto_colors = 0
 let g:indent_guides_enable_on_vim_startup = 1
-hi IndentGuidesEven ctermbg=8
-hi IndentGuidesOdd ctermbg=236
+autocmd VimEnter,Colorscheme * :hi IndentGuidesEven ctermbg=8
+autocmd VimEnter,Colorscheme * :hi IndentGuidesOdd ctermbg=236
 "
 " mapping
 cnoremap <expr> <Down> pumvisible() ? "\<C-n>" : "\<Down>"