CSS output with default about primer HOT 1 CLOSED

@schrapel I purposely removed this behavior for the following reasons:

1. It wasn't future-proof. Always outputting the custom CSS gives us the option to change the default colors in a theme update down the road without affecting existing users of that theme. It will be a poor experience if update their theme and the front-end colors change without warning. This way whatever they have their swatches saved as in the Customizer will always be what is displayed on their site.
2. It prevents people from filtering defaults because there the style.css will not match. For example, if a user wants to change the default color in their child theme (for whatever reason) they can simply filter the primer_colors array. However if the color is not also manually updated in the style.css file, the default would not display correctly.

from primer.