Question Can the background color be changed on Daves?

I have Macular Degeneration and I am finding it harder and harder to read posts.
The problem seems to be the bright white background, and the (to me at least) print that seems not to be as dark.

On my other programs, I can change the background and I seem to be able to see better with a black background and white print. I can also do that on my desktop.

It would help me tremendously if someone would speak up that has any tips or knowledge of this matter and if it can be done instructions for doing so.