Not rooted. I just dont like the blinding white. Tried some themes but they didn't change the email. Using aquamail it's good but not as good as the built in
I've tried lots of themes, but no none of them affects the stock email app. Not sure if it's a limitation or the theme makers just didn't edit the email app details
My Note 2 didn't have that optionI remember my note 2 it had the option of a black theme for email.