Title of widget shown when inserting as WordPress Widget in Nimble Custom Page

Hi Nicolas,
I made some forms for subscribing, signing up and logging in, and I found that when I insert them as WordPress widgets, their titles spelled out in big, all-caps letters that just look really in the way. I’ve tried to resolve them by changing the typography in my theme, but that has no effect. And since the titles are located in WordPress Widgets, the plugins where I created the forms has no control over the titles as well. Is there a way I can either make those titles go away, or at least edit their fonts?