diff --git a/tmux.conf b/tmux.conf
index 496e640b..27233b7d 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -1,3 +1,5 @@
+## Behavior ####################
+
 # go zsh, go
 set-option -g default-shell $SHELL
 
@@ -8,12 +10,62 @@ set -g status-utf8 on
 # look good
 set-option -g default-terminal "screen-256color"
 
-# act like GNU screen
+# Zero-based indexing is fine in programming languages, but not so much in
+# a multiplexer when zero is on the other side of the keyboard.
+set -g base-index 1
+
+# Remove the <C-a> delay
+set -s escape-time 0
+
+
+## Looks ########################
+
+#### COLOUR (Solarized dark)
+
+# default statusbar colors
+set-option -g status-bg colour234
+set-option -g status-fg yellow #yellow
+set-option -g status-attr default
+
+# default window title colors
+set-window-option -g window-status-fg brightblue #base0
+set-window-option -g window-status-bg default
+#set-window-option -g window-status-attr dim
+
+# active window title colors
+set-window-option -g window-status-current-fg brightred #orange
+set-window-option -g window-status-current-bg default
+#set-window-option -g window-status-current-attr bright
+
+# pane border
+set-option -g pane-border-fg black #base02
+set-option -g pane-active-border-fg brightgreen #base01
+
+# message text
+set-option -g message-bg black #base02
+set-option -g message-fg brightred #orange
+
+# pane number display
+set-option -g display-panes-active-colour blue #blue
+set-option -g display-panes-colour brightred #orange
+
+# clock
+set-window-option -g clock-mode-colour green #green
+
+# Rather than constraining window size to the maximum size of any client 
+# connected to the *session*, constrain window size to the maximum size of any 
+# client connected to *that window*. Much more reasonable.
+setw -g aggressive-resize on
+
+
+## Controls #####################
+
+# Remap the key prefix
 unbind C-b
 set -g prefix C-a
 
-# set vi bind
-set-window-option -g mode-keys vi
+# Go to last active window
+bind-key C-a last-window
 
 # share clipboard
 set-option -g default-command "/usr/local/bin/reattach-to-user-namespace -l $SHELL"
@@ -24,6 +76,7 @@ setw -g mouse-select-window on
 setw -g mouse-select-pane on
 
 # act like vim
+set-window-option -g mode-keys vi
 setw -g mode-keys vi
 bind h select-pane -L
 bind j select-pane -D