Feature Request: Define different color for border-t, border-r, border-b, border-l

[masihjahangiri]

I try to write this tailwindcss class but found out that tailwind not support it!

<div className="border border-gray-200 border-t-8 border-t-gray-900">test</div>

[ahinkle]

This has been opened and addressed many times. Please see #560 (comment).