* Add "pattern" and "component" guidance

* Swap a selection of "pattern" for "component"

* Missed a couple files to commit

* Somehow vf-colors.map.scss was deleted

* Referecne `components/vf-core-components`

This doesn't affect vf-core particuarly, but will affect vf-child-template

* Fix a build error/warning

Not sure when this started happening; was erroring but continuing:

> ⚑ Exported 351 of 910 items
> ✘ Failed to export url /components/detail/vf-button--sizes - (/Users/khawkins/Documents/GitHub/vf-core/tools/vf-frctl-theme/views/pages/components/detail.njk)
>   Template render error: (/Users/khawkins/Documents/GitHub/vf-core/tools/vf-frctl-theme/views/partials/pen/preview.njk)
>   Error: Unable to call `entity["variants"]`, which is undefined or falsey