Make theme for install command dynamic

[Gabriel Arcangel Zayas]

The problem

For example, let's say we eject a theme called "foo":
> rake bullet_train:themes:light:eject[foo]

We can use the following command to switch back to light easily:
> rake bullet_train:themes:light:install

However, we don't have a command to re-install foo; in other words, we'd have to re-eject foo all over again, or remember the exact configuration steps needed to use foo again.

The goal

I would like to make this dynamic, maybe something like this:
> rake bullet_train:themes:install[foo]