Canto can be installed over the base concrete5 install or on an empty site.
Styling is provided for many of the core blocks but not all of them. If you need any modified please contact me through the support channel on the concrete5 website.
Canto comes with 5 presets as well as the ability to change any area color and its text color. Body fonts and header fonts are also customizable.
The main content area (the one containing this text is set to be narrow in relation to the page width on larger screens. There is no sidebar currently.