Re: [css4-color] Grayscale shorthand (with alpha)

 "Tab Atkins Jr." <jackalmage@gmail.com>:
> Instead of "gray(", you have "hsl(0,0%," - only a few more characters.

I believe ‘rgb(<byte>)’, ‘rgb(<percentage>)’, ‘rgb(<byte>, <alpha>)’, ‘rgb(<percentage>, <alpha>)’, ‘rgba(<byte>, <alpha>)’, and ‘rgba(<percentage>, <alpha>)’ have been proposed earlier, too.