New mobile UI update affects my vision

I'm visually impaired. Normally what works for me to be able to see/focus/read any text is a dark background with white writing. I was able to function reasonably well with the Sunset theme. However, since the update something has changed. It's like a glare was added. When I look at the Discord chat for any length of time, my eyes ache under the strain.  When I went into the settings (which took a while to figure out how) I went through the options which ranged from dark, darker and even darker to eye swirlingly bright. There seems to be a miss on a happy medium. After playing around with some options. I found one that could maybe have worked. Only to find out that it changes the theme on PC as well. I have my PC set up perfectly for my vision. Unfortunately, the theme on PC and the same theme for mobile does not have the same effect. 
I am requesting, for your consideration, to please add some less bright and less dark options. Also, to separate the options for PC and mobile.
Thank You