Try the dark solarized tmux theme again.

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