When I change the color in the back ground the text gets bigger

When I change the color in the back ground the text gets bigger and the police changes.

When I look at the preview, the grid where the client can choose different option (D'accord, complètement d'accord, etc.) words appears instead of the check box. How can I change the text by check box ?

I could not replicate the same situation:

http://form.jotformpro.com/form/51524550702952? 

Where are you trying to change the form's color? In the form designer or in the preferences?

I cleared the form's cache. You can also try to clear the browser's cache to see if it solves.

Let us know if the problem persists.