Password Protection Widget - Styling
First, drag the Password Protection widget onto the canvas in Muse.
With the Password Protection widget still selected, style the text as desired. You can do this by hitting 'T' on your keyboard and using the standard font selector and text size selector.
With the widget still selected, click 'Hyperlinks' in the top bar. The hyperlinks interface will appear; select 'Edit Link Styles.'
Now preview your page in the browser and your link will now display the designated colors that you set in the link styles section.