Throughout the course of this chapter, we've covered a number of plugins that handle support for the upcoming CSS4 standards, and explored how we can use the cssnext plugin pack to manage the transition to using these new styles.
There is more out there that we can do—the great thing about PostCSS is that we can absolutely write our own plugins to help bolster support for CSS4 attributes. To help prove this, over the next few pages we'll work our way through fixing some issues in CSS, and altering an existing CSS4 color plugin to add support for a different color; we'll start with adding a little color to our next demo, if you pardon the pun!