This module sets color styles for the body, links, pre, code, and hr elements.

## Base Elements

The body element has color set to `--black` and background color white.
Links default to `--blue`. To adjust the link color, define a new value for the `--link-color` custom property.
Pre and code tags have transparent background by default. To set a background color, use `--pre-background-color`.
HRs use the same default border width and color as other border styles. These can be defined with `--border-width` and `--border-color`.