See the MUI Button documentation hereButton - primary color - small
<Button color="primary">Button</Button>Button - secondary color - medium
<Button color="secondary" size="medium">Button</Button>Button - grey color - large
<Button color="greyDark" size="large">Button</Button>Button - primary color - outlined
<Button variant="outlined">Button</Button>Button - secondary color - outlined
<Button color="secondary" size="medium" variant="outlined">
Button
</Button>Button - grey color - large - outlined
<Button color="greyDark" size="large" variant="outlined">
Button
</Button>Buttooooon
<Button color="primary" size="small" fullWidth>
Buttooooon
</Button>