LeaderF: Bad colors for default Gvim colorscheme (white)

• vim or neovim?
  • vim
  • neovim
• Output of vim --version or nvim --version:

VIM - Vi IMproved 8.1 (2018 May 18, compiled Nov 17 2019 23:02:10)
MS-Windows 64-bit GUI version with OLE support
Included patches: 1-2318
Compiled by appveyor@APPVYR-WIN
Huge version with GUI.  Features included (+) or not (-):
+acl                +comments           +file_in_path       +listcmds           +persistent_undo    -sun_workshop       +vertsplit
+arabic             +conceal            +find_in_path       +localmap           -postscript         +syntax             +virtualedit
+autocmd            +cryptv             +float              +lua/dyn            +printer            +tag_binary         +visual
+autochdir          +cscope             +folding            +menu               +profile            -tag_old_static     +visualextra
+autoservername     +cursorbind         -footer             +mksession          +python/dyn         -tag_any_white      +viminfo
+balloon_eval       +cursorshape        +gettext/dyn        +modify_fname       +python3/dyn        +tcl/dyn            +vreplace
-balloon_eval_term  +dialog_con_gui     -hangul_input       +mouse              +quickfix           -termguicolors      -vtp
+browse             +diff               +iconv/dyn          +mouseshape         +reltime            +terminal           +wildignore
++builtin_terms     +digraphs           +insert_expand      +multi_byte_ime/dyn +rightleft          -termresponse       +wildmenu
+byte_offset        +directx            +job                +multi_lang         +ruby/dyn           +textobjects        +windows
+channel            -dnd                +jumplist           +mzscheme/dyn       +scrollbind         +textprop           +writebackup
+cindent            -ebcdic             +keymap             +netbeans_intg      +signs              -tgetent            -xfontset
+clientserver       +emacs_tags         +lambda             +num64              +smartindent        +timers             -xim
+clipboard          +eval               +langmap            +ole                +sound              +title              +xpm_w32
+cmdline_compl      +ex_extra           +libcall            +packages           +spell              +toolbar            -xterm_save
+cmdline_hist       +extra_search       +linebreak          +path_extra         +startuptime        +user_commands      
+cmdline_info       -farsi              +lispindent         +perl/dyn           +statusline         +vartabs            
   system vimrc file: "$VIM\vimrc"
     user vimrc file: "$HOME\_vimrc"
 2nd user vimrc file: "$HOME\vimfiles\vimrc"
 3rd user vimrc file: "$VIM\_vimrc"
      user exrc file: "$HOME\_exrc"
  2nd user exrc file: "$VIM\_exrc"
  system gvimrc file: "$VIM\gvimrc"
    user gvimrc file: "$HOME\_gvimrc"
2nd user gvimrc file: "$HOME\vimfiles\gvimrc"
3rd user gvimrc file: "$VIM\_gvimrc"
       defaults file: "$VIMRUNTIME\defaults.vim"
    system menu file: "$VIMRUNTIME\menu.vim"
Compilation: cl -c /W3 /nologo  -I. -Iproto -DHAVE_PATHDEF -DWIN32  -DFEAT_CSCOPE -DFEAT_TERMINAL -DFEAT_SOUND -DFEAT_NETBEANS_INTG -DFEAT_JOB_CHANNEL   -DFEAT_XPM_W32   -DWINVER=0x0501 -D_WIN32_WINNT=0x0501 /MP -DHAVE_STDINT_H /Ox /GL -DNDEBUG  /Zl /MT -DFEAT_OLE -DFEAT_MBYTE_IME -DDYNAMIC_IME -DFEAT_GUI_MSWIN -DFEAT_DIRECTX -DDYNAMIC_DIRECTX -DFEAT_DIRECTX_COLOR_EMOJI -DDYNAMIC_ICONV -DDYNAMIC_GETTEXT -DFEAT_TCL -DDYNAMIC_TCL -DDYNAMIC_TCL_DLL=\"tcl86t.dll\" -DDYNAMIC_TCL_VER=\"8.6\" -DFEAT_LUA -DDYNAMIC_LUA -DDYNAMIC_LUA_DLL=\"lua53.dll\" -DFEAT_PYTHON -DDYNAMIC_PYTHON -DDYNAMIC_PYTHON_DLL=\"python27.dll\" -DFEAT_PYTHON3 -DDYNAMIC_PYTHON3 -DDYNAMIC_PYTHON3_DLL=\"python37.dll\" -DFEAT_MZSCHEME -I "C:\Program Files\Racket\include" -DMZ_PRECISE_GC -DDYNAMIC_MZSCHEME -DDYNAMIC_MZSCH_DLL=\"libracket3m_a36fs8.dll\" -DDYNAMIC_MZGC_DLL=\"libracket3m_a36fs8.dll\" -DFEAT_PERL -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DDYNAMIC_PERL -DDYNAMIC_PERL_DLL=\"perl528.dll\" -DFEAT_RUBY -DDYNAMIC_RUBY -DDYNAMIC_RUBY_VER=24 -DDYNAMIC_RUBY_DLL=\"x64-msvcrt-ruby240.dll\" -DFEAT_HUGE /Fd.\ObjGXOULYHTRZAMD64/ /Zi
Linking: link  /nologo /opt:ref /LTCG:STATUS /HIGHENTROPYVA:NO oldnames.lib kernel32.lib advapi32.lib shell32.lib gdi32.lib  comdlg32.lib ole32.lib netapi32.lib uuid.lib /machine:AMD64 gdi32.lib version.lib   winspool.lib comctl32.lib advapi32.lib shell32.lib netapi32.lib  /machine:AMD64  libcmt.lib oleaut32.lib user32.lib  /nodefaultlib:lua53.lib  /STACK:8388608  /nodefaultlib:python27.lib /nodefaultlib:python37.lib   "C:\Tcl\lib\tclstub86.lib" winmm.lib WSock32.lib xpm\x64\lib-vc14\libXpm.lib /PDB:gvim.pdb -debug

• Output of :echo has("python"): 0
• Output of :echo has("python3"): 1
• Output of :echo &pythondll(only vim, not neovim): python27.dll
• Output of :echo &pythonthreedll(only vim, not neovim): python37.dll
• Output of :py print(sys.version):

Error detected while processing function EvalVim:
line   31:
E370: Could not load library python27.dll
Error detected while processing function EvalVim:
line   31:
E263: Sorry, this command is disabled, the Python library could not be loaded.

• Output of :py3 print(sys.version): 3.7.4 (tags/v3.7.4:e09359112e, Jul 8 2019, 20:34:20) [MSC v.1916 64 bit (AMD64)]
• Output of :echo g:Lf_Debug_Cmd: rg --no-messages --files -g "!.svn" -g "!.git" -g "!.hg" -g "!*.sw?" -g "!~$*" -g "!*.bak" -g "!*.exe" -g "!*.o" -g "!*.so" -g "!*.py[co]" -g "!*.tmp" -g "!*.ttf" -L --hidden
• Output of :echo g:Lf_FilesFromCache: 0
• Operating system:
  • Linux
  • Mac OS X
  • Windows
  • Etc.
• Configurations related to LeaderF in vimrc:

	let g:Lf_WindowPosition = 'popup'
	let g:Lf_StlSeparator = { 'left': '', 'right': '' }
	let g:Lf_ShortcutF = '<leader>ff'
	let g:Lf_Shortcutb = '<leader>b'
	let g:Lf_WindowHeight = 0.30
	let g:Lf_ShowHidden = 1
	let g:Lf_FollowLinks = 1
	let g:Lf_NormalMap = {"File":   [["u", ':LeaderfFile ..<CR>']]}
    let g:Lf_PreviewResult = { 'BufTag': 0 }
    let g:Lf_WildIgnore = {
            \ 'dir': ['.svn','.git','.hg'],
            \ 'file': ['*.sw?','~$*','*.bak','*.exe','*.o','*.so','*.py[co]', '*.tmp','*.ttf']
            \}
    let g:Lf_MruWildIgnore = copy(g:Lf_WildIgnore)
	let g:Lf_UseVersionControlTool = 0
	nnoremap <leader>f/ :Leaderf rg 
	nnoremap <leader>/ :LeaderfLine<CR>
	nnoremap <leader>f; :LeaderfHistoryCmd<CR>
	nnoremap <leader>ftt :LeaderfTag<CR>
	nnoremap <leader>ftb :LeaderfBufTag<CR>
	nnoremap <leader>fh :LeaderfHelp<CR>
	nnoremap <leader>fm :LeaderfMru<CR>
	nnoremap <leader>fs :LeaderfSelf<CR>
	nnoremap <leader>fc :LeaderfColorscheme<CR>
	nnoremap <leader>fdd :LeaderfFile ~/docs<CR>
	packadd LeaderF

Describe your question, feature request, or bug.

default colors are subjectively bad

Steps to reproduce

Open GVim with default light colorscheme and run leaderf in popup

Actual behaviour

If you manually set background=dark then it looks ok:

But the rest of vim syntax highlighting becomes unreadable.

Expected behaviour