fix another solarized2 dark gui typo. also, add :AirlineTheme command.

autoload/airline/themes/solarized2.vim

@@ -33,7 +33,7 @@ end
 let s:N1 = [s:base2.g, s:blue.g, s:base2.t, s:blue.t, 'bold']
 let s:N2 = [s:base2.g, s:base01.g, s:base2.t, s:base01.t]
 if s:background == 'dark'
-    let s:N3 = [s:base1.g, s:base2.g, s:base1.t, s:base02.t]
+    let s:N3 = [s:base1.g, s:base02.g, s:base1.t, s:base02.t]
     let s:NF = [s:pinky.g, s:base02.g, s:pinky.t, s:base02.t, '']
 else
     let s:N3 = [s:base1.g, s:base2.g, s:base1.t, s:base2.t]

doc/airline.txt

@@ -149,6 +149,13 @@ example that you could add to your vimrc:
   endfunction
   call add(g:airline_window_override_funcrefs, function('MyPlugin'))
 <
+
+==============================================================================
+COMMANDS                                             *airline-commands*
+>
+:AirlineTheme {theme-name}                           *:AirlineTheme*
+  Changes the current airline theme.
+
 ==============================================================================
 CONTRIBUTIONS                                        *airline-contributions*
 

plugin/airline.vim

@@ -51,6 +51,17 @@ function! s:init()
   endif
 endfunction
 
+function! s:change_theme(name)
+  let g:airline_theme = a:name
+  let load = g:airline#themes#{a:name}#normal
+  call airline#highlight(['normal'])
+endfunction
+function! s:get_airline_themes(a, l, p)
+  let files = split(globpath(&rtp, "autoload/airline/themes/*"), "\n")
+  return map(files, 'fnamemodify(v:val, ":t:r")')
+endfunction
+command! -nargs=1 -complete=customlist,<sid>get_airline_themes AirlineTheme call <sid>change_theme(<f-args>)
+
 augroup airline
   au!
   autocmd ColorScheme * call airline#highlight(['normal'])