What version of Tailwind CSS are you using?
v3.0.5
What build tool (or framework if it abstracts the build tool) are you using?
postcss-cli 8.4..5
What version of Node.js are you using?
v16.13.1
What browser are you using?
Chrome
What operating system are you using?
macOS
Reproduction URL
Repo te reproduce bug
Describe your issue
Default colour is not applied when using a function to generate default colour for ring. Works for border. Was working v2.2.19.