Fix parenthesis highlighting

The original molokai highlighting made it look like the cursor was
jumping to the far bracket which was very disconcerting.

There is a discussion and example on the pull here - tomasr#44

In that pull the colors are simply reversed, I've tweaked them slightly
so that the far cursor is a bit easier to spot by having a lightened
background.

colors/molokai.vim

@@ -177,7 +177,7 @@ if &t_Co > 255
    hi Macro           ctermfg=193
    hi SpecialKey      ctermfg=81
 
-   hi MatchParen      ctermfg=233  ctermbg=208 cterm=bold
+   hi MatchParen      ctermfg=208  ctermbg=238 cterm=bold
    hi ModeMsg         ctermfg=229
    hi MoreMsg         ctermfg=229
    hi Operator        ctermfg=161