Is there any way to force all text to 100% black?

[JJ Johnson]

I can't stand that most links, such as those in TOCs, are gray. So much harder to read. And it sometimes seems that the standard text in books is itself some shade of dark gray rather than full black.

Without editing the CSS from every book in my library, is there a way to force all text and links to #000 black?

[DNSB]

Originally Posted by JJ Johnson

I can't stand that most links, such as those in TOCs, are gray. So much harder to read. And it sometimes seems that the standard text in books is itself some shade of dark gray rather than full black.

Without editing the CSS from every book in my library, is there a way to force all text and links to #000 black?

The only way I know of without editing the books is to use one of KoboPatch items: Ignore ePub book CSS and Adobe XPGT stylesheets in the librmsdk.so.1.0.0.yaml file. However this disables all stylesheets so not all that useful unless you really want to toss the baby out with the bathwater.