[ToggleButton] Selected color should be take in account without '! important'

When you want to use a specific color on the selected toggleButton, you must add important for the color to be taken into account

Example with codesandbox

[TomPradat]

@oliviertassinari Shouldn’t the classes override win over the default style ?

From the codesandbox:

<ToggleButton
        value="left"
        aria-label="left aligned"
        classes={{ selected: classes.buttonColor }}
      >

Indeed the specificy is less important because you have one class .makeStyles-buttonColor-1 vs .MuiToggleButton-root.Mui-selected

[TomPradat]

Alright, I missed that, thanks 👍