I am building a site using "spectral" theme from rockettheme.

When I add my cook component the Yes/No buttons are not formatting correctly.
The component looks ok in the j-cook sandbox, and it is ok in prostar theme (joomla administrator template), but it is not ok on the front end.

Seems nobody is answering the forum this week, so I just changed my theme.

Since I do not have this theme, I cannot make a try.
Can you send a picture ?

I definitively recommend you to debug it with the admin tools of your browser.
Once the page is loaded, desactivate the CSS styles coming from the template, one by one. So you can understand where the problem is.