Hello @Donna Graham39
I have tried a few different ways to achieve what you are looking for. Some of them were with settings and others with browser add-ons.
I have achieve a result that does look like it may help.
First I am doing this in Mozilla Firefox. Let me know if you only have Google Chrome and I can see what I can do.
I first changed the option in Settings > General > Language and Appearance, to Dark
Then Click on Extensions & Themes
In the top search box labeled "Find more add-ons" type: Dark reader
(It has a little robot looking head with goggles on)
Install the add-on, give it permissions and you're done!
I hope this helps, drop me a replay and let me know.
--Your friendly neighborhood Axxess User--