Can I upload this style to my test site of another domain? Want to see if it'll work. It's a great style.
I have edge I believe running live on that site.
Also how do I set up the dark light style chooser with this one?
The easiest method will be to download the Bolt dark CHILD style from the same link above, import as a child of your style. That will it will inherit most of your changes (footer settings, logo, other items). From there you can set up the light bulb: https://pixelexit.com/documentation/light-switch/
Does this work in general? i.e. If I download the Dark style, add it as a child to Bolt Canvas, will it give me a "dark canvas" style?