Tab key not working in tmux

Add the following to the .tmux.conf:

    unbind -n Tab

Wow, TAB is back!

Keep the color prompt in tmux

To keep your prompt (PS1) with color shown in tmux screen, add the following property in .bashrc:

force_color_prompt=yes

Navigate tmux splitted pane using mouse

To enable navigation on tmux splitted pane using mouse

In tmux environment, do the following:

1. Ctrl-b
2. Type :setw -g mouse on

Done, try to switch your tmux pane with mouse.

Note:
To make this setting persistent, save this line in .tmux.conf:
setw -g mouse on