diff --git a/powerline/block/gray.tmuxtheme b/powerline/block/gray.tmuxtheme
index fcbe863..f342805 100644
--- a/powerline/block/gray.tmuxtheme
+++ b/powerline/block/gray.tmuxtheme
@@ -12,18 +12,15 @@
 set -g status-interval 1
 
 # Basic status bar colors
-set -g status-fg colour238
-set -g status-bg colour233
+set -g status-style fg=colour238,bg=colour233
 
 # Left side of status bar
-set -g status-left-bg colour233
-set -g status-left-fg colour243
+set -g status-left-style bg=colour233,fg=colour243
 set -g status-left-length 40
 set -g status-left "#[fg=colour232,bg=colour245,bold] #S #[fg=colour245,bg=colour240,nobold]#[fg=colour233,bg=colour240] #(whoami) #[fg=colour240,bg=colour235]#[fg=colour240,bg=colour235] #I:#P #[fg=colour235,bg=colour233,nobold]"
 
 # Right side of status bar
-set -g status-right-bg colour233
-set -g status-right-fg colour243
+set -g status-right-style bg=colour233,fg=colour243
 set -g status-right-length 150
 set -g status-right "#[fg=colour235,bg=colour233]#[fg=colour240,bg=colour235] %H:%M:%S #[fg=colour240,bg=colour235]#[fg=colour233,bg=colour240] %d-%b-%y #[fg=colour245,bg=colour240]#[fg=colour232,bg=colour245,bold] #H "
 
@@ -32,12 +29,10 @@ set -g window-status-format " #I:#W#F "
 set -g window-status-current-format " #I:#W#F "
 
 # Current window status
-set -g window-status-current-bg colour245
-set -g window-status-current-fg colour232
+set -g window-status-current-style bg=colour245,fg=colour232
 
 # Window with activity status
-set -g window-status-activity-bg colour245 # fg and bg are flipped here due to
-set -g window-status-activity-fg colour233 # a bug in tmux
+set -g window-status-activity-style bg=colour245,fg=colour233 # fg and bg are flipped here due to a bug in tmux
 
 # Window separator
 set -g window-status-separator ""
@@ -46,12 +41,10 @@ set -g window-status-separator ""
 set -g status-justify centre
 
 # Pane border
-set -g pane-border-bg default
-set -g pane-border-fg colour235
+set -g pane-border-style bg=default,fg=colour235
 
 # Active pane border
-set -g pane-active-border-bg default
-set -g pane-active-border-fg colour240
+set -g pane-active-border-style bg=default,fg=colour240
 
 # Pane number indicator
 set -g display-panes-colour colour233
@@ -62,13 +55,10 @@ set -g clock-mode-colour colour240
 set -g clock-mode-style 24
 
 # Message
-set -g message-bg colour245
-set -g message-fg colour232
+set -g message-style bg=colour245,fg=colour232
 
 # Command message
-set -g message-command-bg colour233
-set -g message-command-fg colour250
+set -g message-command-style bg=colour233,fg=colour250
 
 # Mode
-set -g mode-bg colour243
-set -g mode-fg colour232
+set -g mode-style bg=colour243,fg=colour232