Email Template Which Background

Is there anyway to set the emails for Invoice & quote (and I guess the rest) to have a white background?

Every time I send something it comes out like this:

The email client I’m using it showing the “Light” version not dark. But for some reason it keeps showing a black background.
anyway to force a white background?


Where are you checking the email? Is it possible you have dark mode enabled in your browser or OS?