vim-highlight-log

" add this to your .vimrc and have some highlights when viewing log files
"  originally made for Android logs; just change the regex for other kinds of logs
"  the negative number (which is the priority arg) prevents these rules to 
"   override the Search Highlight, since it has priority equal to 0
"  not extensively tested; may need additional .vimrc settings
"   (worked with this settings: https://github.com/geonnave/dotfiles/blob/master/.vimrc)
"  color codes taken from http://vim.wikia.com/wiki/Xterm256_color_names_for_console_Vim

" error lines have red text
highlight log_error ctermfg=203
call matchadd('log_error', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+\s\+\d\+\s\+\d\+ E .*', -1)
call matchadd('log_error', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+ E\/.*', -2)

" debug is blue
highlight log_debug ctermfg=74
call matchadd('log_debug', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+\s\+\d\+\s\+\d\+ D .*', -3)
call matchadd('log_debug', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+ D\/.*', -4)

" warning is yellow
highlight log_warning ctermfg=148
call matchadd('log_warning', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+\s\+\d\+\s\+\d\+ W .*', -5)
call matchadd('log_warning', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+ W\/.*', -6)

" info is green
highlight log_info ctermfg=34
call matchadd('log_info', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+\s\+\d\+\s\+\d\+ I .*', -7)
call matchadd('log_info', '\d\+-\d\+ \d\+:\d\+:\d\+.\d\+ I\/.*', -8)