Try the dark solarized tmux theme again.

.tmux.conf

 bind-key b send-prefix
 set -g set-titles on
 set -g set-titles-string '#T'
+
+# Copied from https://github.com/seebi/tmux-colors-solarized/blob/master/tmuxcolors-dark.conf
+#### COLOUR (Solarized dark)
+
+# default statusbar colors
+set-option -g status-style fg=yellow,bg=black #yellow and base02
+
+# default window title colors
+set-window-option -g window-status-style fg=brightblue,bg=default #base0 and default
+#set-window-option -g window-status-style dim
+
+# active window title colors
+set-window-option -g window-status-current-style fg=brightred,bg=default #orange and default
+#set-window-option -g window-status-current-style bright
+
+# pane border
+set-option -g pane-border-style fg=black #base02
+set-option -g pane-active-border-style fg=brightgreen #base01
+
+# message text
+set-option -g message-style fg=brightred,bg=black #orange and base01
+
+# 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
+
+# bell
+set-window-option -g window-status-bell-style fg=black,bg=red #base02, red