Prevent color change when vim is invoked.
My computer is running Windows 10 Pro 64-bit. I connect to remote Linux Machine using telnet utility.
My shell is bash. My terminal emulator screen has black background and white foreground. I invoke vim <filename>. I exit vim and return to
my terminal. Now the terminal has changed colors. man vim doesn't have color option that will tell me how to disable color when vim is inovked.