How to capture data and settings made for a website?

I’m hoping there are plugins for this…

Let’s say I take a theme, I create pages, I make setting changes – to colors and font’s and set template pages + I fill out data – I add text, images + I add slide shows and galleries…

Is there a way I can capture all of these settings + data – so that I can roll out the same website many times?

I’m guessing there is, since themes come with data importing (can’t remember what it’s called).

Thanks.