how to change size of separator in react code example

Example 1: how to change materil ui divider coloer

<HomeIcon />
<HomeIcon color="primary" />
<HomeIcon color="secondary" />
<HomeIcon color="action" />
<HomeIcon color="disabled" />
<HomeIcon style={{ color: green[500] }} />
<HomeIcon style={{ color: 'red' }} />

Example 2: how to change materil ui divider coloer

const useStyles = makeStyles((theme) => ({
  divider: {
      // Theme Color, or use css color in quote
      background: theme.palette.divider,
  },
}));


<Divider classes={{root: classes.divider}} />