diff --git a/autoload/airline.vim b/autoload/airline.vim
index 5d09e47..bbea8b8 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -66,7 +66,7 @@ endfunction
 function! airline#update_statusline()
   for nr in filter(range(1, winnr('$')), 'v:val != winnr()')
     call setwinvar(nr, 'airline_active', 0)
-    let context = { 'winnr': nr, 'active': 0 }
+    let context = { 'winnr': nr, 'active': 0, 'bufnr': winbufnr(nr) }
     call s:invoke_funcrefs(context, s:inactive_funcrefs)
   endfor
 
@@ -77,7 +77,7 @@ function! airline#update_statusline()
   endfor
 
   let w:airline_active = 1
-  let context = { 'winnr': winnr(), 'active': 1 }
+  let context = { 'winnr': winnr(), 'active': 1, 'bufnr': winbufnr(winnr()) }
   call s:invoke_funcrefs(context, g:airline_statusline_funcrefs)
 endfunction
 
@@ -96,10 +96,12 @@ function! s:invoke_funcrefs(context, funcrefs)
 endfunction
 
 function! airline#statusline(winnr)
-  return '%{airline#check_mode()}'.s:contexts[a:winnr].line
+  return '%{airline#check_mode('.a:winnr.')}'.s:contexts[a:winnr].line
 endfunction
 
-function! airline#check_mode()
+function! airline#check_mode(winnr)
+  let context = s:contexts[a:winnr]
+
   if get(w:, 'airline_active', 1)
     let l:m = mode()
     if l:m ==# "i"
@@ -117,9 +119,23 @@ function! airline#check_mode()
     let w:airline_current_mode = get(g:airline_mode_map, '__')
   endif
 
-  if g:airline_detect_modified && &modified
-    call add(l:mode, 'modified')
+  if g:airline_detect_modified
+    if &modified
+      call add(l:mode, 'modified')
+      let colors = g:airline#themes#{g:airline_theme}#palette.inactive_modified.airline_b
+    else
+      let colors = g:airline#themes#{g:airline_theme}#palette.inactive.airline_b
+    endif
+
+    for winnr in range(1, winnr('$'))
+      if winnr != a:winnr
+            \ && has_key(s:contexts, winnr)
+            \ && s:contexts[winnr].bufnr == context.bufnr
+        call airline#highlighter#exec('airline_b'.(context.bufnr).'_inactive', colors)
+      endif
+    endfor
   endif
+
   if g:airline_detect_paste && &paste
     call add(l:mode, 'paste')
   endif
diff --git a/autoload/airline/extensions/default.vim b/autoload/airline/extensions/default.vim
index 5cbfcba..6829a84 100644
--- a/autoload/airline/extensions/default.vim
+++ b/autoload/airline/extensions/default.vim
@@ -48,7 +48,7 @@ function! airline#extensions#default#apply(builder, context)
   if airline#util#getwinvar(winnr, 'airline_render_left', active || (!active && !g:airline_inactive_collapse))
     call <sid>build_sections(a:builder, a:context, s:layout[0])
   else
-    call a:builder.add_section('airline_b', ' %f%m ')
+    call a:builder.add_section('airline_b'.(a:context.bufnr), ' %f%m ')
     call a:builder.add_section('airline_c', '')
   endif
 
diff --git a/autoload/airline/themes/dark.vim b/autoload/airline/themes/dark.vim
index 74e39fa..71f8b6f 100644
--- a/autoload/airline/themes/dark.vim
+++ b/autoload/airline/themes/dark.vim
@@ -84,6 +84,9 @@ let s:IA1 = [ '#4e4e4e' , '#1c1c1c' , 239 , 234 , '' ]
 let s:IA2 = [ '#4e4e4e' , '#262626' , 239 , 235 , '' ]
 let s:IA3 = [ '#4e4e4e' , '#303030' , 239 , 236 , '' ]
 let g:airline#themes#dark#palette.inactive = airline#themes#generate_color_map(s:IA1, s:IA2, s:IA3, s:file)
+let g:airline#themes#dark#palette.inactive_modified = {
+      \ 'airline_b': [ '#875faf' , '' , 97 , '' , '' ] ,
+      \ }
 
 
 " Here we define the color map for ctrlp.  We check for the g:loaded_ctrlp