I was also using Dark Reader and having the same issue. I found a workaround, which is to use the Chrome extension Dark Reader Dark instead of Dark Reader.
DRDark: Dark Reader Dark - Chrome Web Store
The LipSurf tags on Dark Reader Dark are very easy to read!
I do think that aside from compatibility issues with other extensions (i.e. Dark Reader), it would be ideal to have controls in LipSurf for users to be able to select the colors. For users who have vision issues, the ability to select the colors can make a huge difference in accessibility.
I also have another feature request for Miko and the LipSurf team. (Let me know if I should create another thread for this). Could you please consider a setting to allow users to control the size of the tags? I realize that if the tags get too big they become unwieldly. From an accessibility standpoint though, it would help me (and surely others) to be able to make them a bit bigger!
Thank you so much! LipSurf is a life saver for me!!!