• The issue is present in the latest release.
• I have searched the issues of this repository and believe that this is not a duplicate.

Current Behavior 😯

I set the theme to dark mode using the createMuiTheme as stated in the documentation and provided it with a ThemeProvider. However, when I put in TextField or Button into my application, I get the same accent colors as the original light mode.

Expected Behavior 🤔

I expect the palette colors to change to match the colors on the Material UI page such as here or here.

Steps to Reproduce 🕹

Here's a code sandbox showing what I mean.

https://codesandbox.io/s/material-demo-pb53w

The colors on the TextFields are dark blue and don't contrast at all with the Paper behind them. Since the Paper color changed, I would expect the TextFields' outlines to change as well.

Context 🔦

I'm trying to use the dark mode since I think it better suits my use case, and I thought that the dark mode would be automatically applied to all the components.

Your Environment 🌎