The previous setting gave me white on white in some cases so I added guibg.
highlight cConstant ctermfg=white ctermbg=grey guifg=white guibg=greyhighlight cString ctermfg=white ctermbg=grey guifg=white guibg=grey highlight cNumber ctermfg=white ctermbg=grey guifg=white guibg=grey
Regards, Ben K. Developer http://benix.tamu.edu
