diff --git a/alacritty/.config/alacritty/themes/dark.yml b/alacritty/.config/alacritty/themes/dark.yml
index 7c59efb..d2f4158 100644
--- a/alacritty/.config/alacritty/themes/dark.yml
+++ b/alacritty/.config/alacritty/themes/dark.yml
@@ -1,28 +1,30 @@
-# Colors (Ayu Mirage)
+# Colors (Gruvbox dark)
 colors:
   # Default colors
   primary:
-    background: '#202734'
-    foreground: '#CBCCC6'
+    # hard contrast: background = '0x1d2021'
+    background: '0x282828'
+    # soft contrast: background = '0x32302f'
+    foreground: '0xebdbb2'
 
   # Normal colors
   normal:
-    black: '#191E2A'
-    red: '#FF3333'
-    green: '#BAE67E'
-    yellow: '#FFA759'
-    blue: '#73D0FF'
-    magenta: '#FFD580'
-    cyan: '#95E6CB'
-    white: '#C7C7C7'
+    black:   '0x282828'
+    red:     '0xcc241d'
+    green:   '0x98971a'
+    yellow:  '0xd79921'
+    blue:    '0x458588'
+    magenta: '0xb16286'
+    cyan:    '0x689d6a'
+    white:   '0xa89984'
 
   # Bright colors
   bright:
-    black: '#686868'
-    red: '#F27983'
-    green: '#A6CC70'
-    yellow: '#FFCC66'
-    blue: '#5CCFE6'
-    magenta: '#FFEE99'
-    cyan: '#95E6CB'
-    white: '#FFFFFF'
+    black:   '0x928374'
+    red:     '0xfb4934'
+    green:   '0xb8bb26'
+    yellow:  '0xfabd2f'
+    blue:    '0x83a598'
+    magenta: '0xd3869b'
+    cyan:    '0x8ec07c'
+    white:   '0xebdbb2'
diff --git a/alacritty/.config/alacritty/themes/light.yml b/alacritty/.config/alacritty/themes/light.yml
index f0ecac8..3a10d3b 100644
--- a/alacritty/.config/alacritty/themes/light.yml
+++ b/alacritty/.config/alacritty/themes/light.yml
@@ -1,27 +1,30 @@
-# ayu-light
+# Colors (Gruvbox light)
 colors:
+  # Default colors
   primary:
-    background: '0xfafafa'
-    foreground: '0x5b6672'
+    # hard contrast: background = '0xf9f5d7'
+    background: '0xfbf1c7'
+    # soft contrast: background = '0xf2e5bc'
+    foreground: '0x3c3836'
 
   # Normal colors
   normal:
-    black: '0x000000' #0
-    red: '0xf2590b' #1
-    green: '0x76cc00' #2
-    yellow: '0xf29717' #3
-    blue: '0x41a5d9' #4
-    magenta: '0x9965cc' #5
-    cyan: '0x4dbf98' #6
-    white: '0xc7c7c7' #7
+    black:   '0xfbf1c7'
+    red:     '0xcc241d'
+    green:   '0x98971a'
+    yellow:  '0xd79921'
+    blue:    '0x458588'
+    magenta: '0xb16286'
+    cyan:    '0x689d6a'
+    white:   '0x7c6f64'
 
   # Bright colors
   bright:
-    black: '0x676767'
-    red: '0xd6646a' #9
-    green: '0xa3d900' #10
-    yellow: '0xe7c446' #11
-    blue: '0x6871ff' #12
-    magenta: '0xa37acc' #13
-    cyan: '0x56d9ad' #14
-    white: '0xfeffff' #15
+    black:   '0x928374'
+    red:     '0x9d0006'
+    green:   '0x79740e'
+    yellow:  '0xb57614'
+    blue:    '0x076678'
+    magenta: '0x8f3f71'
+    cyan:    '0x427b58'
+    white:   '0x3c3836'
diff --git a/bin/bin/toggle-color-mode b/bin/bin/toggle-color-mode
index c3ed4c5..45d2ce2 100755
--- a/bin/bin/toggle-color-mode
+++ b/bin/bin/toggle-color-mode
@@ -20,3 +20,11 @@ echo $alacritty_header > $alacritty/alacritty.yml
 cat $alacritty/alacritty-base.yml $alacritty/themes/$new_color.yml >> $alacritty/alacritty.yml
 
 echo $new_color > $color_file
+
+for pane_info in $(tmux list-panes -a -F '#{pane_id}-#{pane_current_command}'); do
+  IFS=- read pane cmd <<< "$pane_info"
+
+  if [[ $cmd == "vim" || $cmd == "nvim" ]]; then
+    tmux send-keys -t $pane ":call ChangeBackground()" ENTER
+  fi
+done
diff --git a/tmux/.config/tmux/tmux.conf b/tmux/.config/tmux/tmux.conf
index 39826a8..0762e1f 100644
--- a/tmux/.config/tmux/tmux.conf
+++ b/tmux/.config/tmux/tmux.conf
@@ -1,5 +1,8 @@
 bind-key r source-file ~/.config/tmux/tmux.conf \; display-message " ✱ tmux.conf is reloaded"
 
+set -g default-terminal "alacritty"
+set -ag terminal-overrides ",alacritty:RGB"
+
 # for muxception
 bind-key b send-prefix
 
diff --git a/vim/.vimrc b/vim/.vimrc
index 31c15ca..93e4423 100644
--- a/vim/.vimrc
+++ b/vim/.vimrc
@@ -18,6 +18,9 @@ Plug 'rust-lang/rust.vim'
 Plug 'tpope/vim-rails'
 Plug 'vim-ruby/vim-ruby'
 
+" colors
+Plug 'morhetz/gruvbox'
+
 call plug#end()
 
 " STATUS LINE
@@ -124,6 +127,17 @@ autocmd BufNewFile,BufRead *.tftpl :set filetype=terraform
 " other
 map <Leader>fj :%!jq .<cr>
 
+" COLOR CONFIGURATION
+colorscheme gruvbox
+
+" NONE is case sensitive in vim here (but not nvim)
+autocmd ColorScheme * hi Normal ctermbg=NONE guibg=NONE
+
+function! ChangeBackground()
+  let &background=readfile(glob("~/.config/atomaka/color.yml"))[0]
+endfunction
+call ChangeBackground()
+
 " PLUGIN CONFIGURATION
 " editorconfig-vim
 let g:EditorConfig_exclude_patterns = ['fugitive://.*', 'scp://.*']