termux-style cmd

[octavo]

The user would like to programatically change the theme, ie $ termux-style theme1.

[thiswillbeyourgithub]

Need this.

I would also use it to set the theme depending on the current time, and set and env variable that would be sent via ssh to match my client theme.

This would also allow making #204.

[muhammadanasbangla-spec]

Thermax font Urdu