Add a option to set the background opacity

[luco]

Hey, nice theme. Would be great to have an option the set the background transparency and the color as well.

[lmcl90]

You can set the opacity in .hyper.js like this

verminal: {
      fontSize: 15,
      backgroundColor: 'rgba(0, 0, 0, 1)'
    }

[vernondegoede]

Feel free to submit a PR and add an option to configure the opacity through verminal config. 🥇

[mil1i]

Also just a note on this.

On Windows, you must set the backgroundColor: 'rgba(0, 0, 0, 0.X)' option under the verminal config stated above to adjust the focus opacity. If you have hyper-opacity installed, the focus opacity gets ignored with verminal active. However, if you set the blur: 0.X (bg window) option with hyper-opacity that is still honored on Windows with verminal theme.

On Mac, hyper-opacity settings overrule verminal settings.