Add spell checking colors into xoria256 vim's theme.

.vim/colors/xoria256.vim

@@ -80,6 +80,12 @@ hi Todo         ctermfg=0   guifg=#000000 ctermbg=184 guibg=#dfdf00
 hi Type         ctermfg=146 guifg=#afafdf                           cterm=none gui=none
 hi Underlined   ctermfg=39  guifg=#00afff                           cterm=underline gui=underline
 
+"" Spell checking
+hi SpellBad     ctermfg=1                  ctermbg=0                cterm=underline
+hi SpellCap     ctermfg=12                 ctermbg=0                cterm=underline
+hi SpellRare    ctermfg=13                 ctermbg=0                cterm=underline
+hi SpellLocal   ctermfg=14                 ctermbg=0                cterm=underline
+
 "" Special
 """ .diff
 hi diffAdded    ctermfg=150 guifg=#afdf87