Piotr Monwid-Olechnowicz

I think this issue needs a change in the docs and Next.js example on our side. We need to state clearly that 1. React JSX syntactic sugar can be transformed...

8. It seems MDX doesn't support automatic runtime yet (needs confirmation?), so your Theme UI + Gatsby + MDX blog might need to use the classic runtime for the time...

There are definitely some caveats and mines to step here, so a guide could definitely add some value. We could also hop on Discord or a Twitter space and chat...

I won't have access to a MacOS for a while. Does this lead to any visible bug, or is it just a warning? (I guess I'm asking if you could...

Connected to https://github.com/system-ui/theme-ui/pull/1090.

:rocket: Issue was released in [`v0.15.0-develop.17`](https://github.com/system-ui/theme-ui/releases/tag/v0.15.0-develop.17) :rocket:

> Latest develop also has the default value code so it looks like your PR was reverted: https://github.com/system-ui/theme-ui/pull/1327#issuecomment-739725808 #1327 broke `@theme-ui/color`. I reverted it before `alpha.4`.

So, right now when you change the class on body it works as expected, but it won't (if I remember correctly) if you're using `@theme-ui/color`.

> Sorry, I missed that, have no idea what did break in @theme-ui/color, if we get more details can try to fix it. https://github.com/system-ui/theme-ui/blob/6a7256ec8075e5a5c0f0a182a5554946ed8e2478/packages/color/src/index.ts#L8-L12 `getColor` reads these default values. ---...

@atanasster https://codesandbox.io/s/eloquent-franklin-2o8nx?file=/src/App.js