Support AccentColor keyword

[o-t-w]

I think it would be useful to have classes such as bg-accent, border-accent, text-accent etc that reference the AccentColor. You can read about the CSS AccentColor keyword here.

[Nandinisingh-05]

This would be a useful addition! Supporting a shared "AccentColor" keyword across background, border, and text utilities could help developers maintain consistent theming and improve customization. It would be great to see how this could integrate with Tailwind CSS's existing color utilities.