Hello Amanda Shafer,
Thank you for contacting Telerik Support.
That is a tough one, in 4.0 you can apply a theme to the template only. What I could suggest you is to apply a template that already contains the desired theme (if present, otherwise you might want to create one) to the imported page.
I hope this information was useful. Please let me know if I can assist you any further with this service request. Thank you in advance.
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