Re: [w3ctag/design-reviews] Canvas 2D color management (#646)

> Yeah, that's correct.

Thank you. Is it correct to assume it would throw with the same error in subsequent calls to `getContext()`?

I.e.

```js
let ctx = canvas.getContext("2d", {colorSpace: "display-p3" });
let ctx2 = canvas.getContext("2d", {colorSpace: "flugelhorn" }); // throws?
```

Another question that came up in a breakout this week. I do see some examples in the explainer use a media query to decide which color space to use. I assume however that the canvas color space and the display device color space are entirely decoupled, and therefore it's entirely possible to work on a P3 canvas, in a less capable (e.g. sRGB) display device. You would obviously not _see_ the non-sRGB colors, but the underlying numbers would be unaffected. Is my assumption correct? 

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