Exciting 🎉

One clarification point is: For st.dataframe, there's an issue where the dataframe will keep the default font and will flicker to the new font after interaction, as can be seen here 👇

This seems to be related to this widget being a <canvas> element. A few alternatives we discussed with @sfc-gh-tteixeira are:

• We could try to force a re-render by passing a dummy prop to the dataframe component, which changes when the theme changes;
• We could try to tell the underlying dataframe library we’re using to refresh somehow. Need to reach their docs.

However, we discussed this with @sfc-gh-wschmitt and agreed that for now it won't matter in practice because the theme postMessage call would arrive before anything else is drawn on the screen. At some point we might want to address this differently so we don't run into race conditions if we get really good at loading SiS apps, but for now we should be good to ship this with the next Streamlit release in SiS.

Are there any other props that need to get passed here? I assume no but just want to double check and ask again.

Not for now, we should be fine with this solution until we get really good at loading SiS apps, which won't happen anytime soon 😄