Re: [csswg-drafts] [css-color-4] Is the fallback for `device-cmyk()` needed (#6721)

The [proprietary`cmyk()` function in PrinceXML](https://www.princexml.com/doc/11/color/) does not have a fallback:

```css
color: cmyk(1, 0, 0, 0)       // cyan
color: cmyk(0, 1, 1, 0)       // red
color: cmyk(0, 0, 0, 1)       // black
color: cmyk(0, 1, 1, 0, 0.1)  // translucent red
```

and their implementation of `device-cmyk()` is an alias to their `cmyk()`:

> CMYK colors can be specified using the cmyk() or, alternatively, the equivalent device-cmyk() function syntax. An optional fifth value is for the alpha channel, i.e. for opacity.

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Received on Tuesday, 12 October 2021 09:52:27 UTC