That's not really a viable option because it affects all other web sites.
It's unfortunate that the color scheme was implemented, it violates one of the basic rules of web design (insufficient contrast between background and text), and equally unfortunate that they appear to have disabled the ability to use other "board styles", which would solve the problem. Not everyone is able to read low contrast text (especially as we get older, but I'm not saying I'm old!)
I do appreciate your attempt to help me, perhaps the forum admins will realize that the color choices are not optimal, and find a better solution. White letters with the OD background might work, but the real solution is to allow users the choice of colors, which with most forum software is implemented in the "board styles" options.
Anyway, thanks for that suggestion. Wish it was usable.