Hello Vorxio,

'Been searching, but the only thing I could find that looks like your problem is in this thread :

https://support.mozilla.org/en-US/questions/1117216

Would that Chosen Solution work for you  ?

Hi Vorxio, is the top bar in your screenshot showing the normal combination for your Windows title bars, white text on dark blue, and are inactive title bars white on gray?

That could be where Firefox is getting the white text from, but I haven't seen it before and wasn't aware that could happen on Windows 7 (adapting to the system is a recently added Windows 10 behavior).

There are alternative ways to change text colors besides using a different theme. If you want to try something new, there is the Firefox Color tool: https://color.firefox.com/.

Another option is to apply custom style rules using an optional userChrome.css file. If that is a new feature for you, someone may have a suggestion along those lines here, or you could inquire on the following site:

https://www.reddit.com/r/FirefoxCSS/

See also my site here: https://www.userchrome.org/

Vorxio said

Hi,

• My Firefox has just updated (64.0) and under Windows 7 the titles of inactive Tabs are unreadable (white on light gray).

• See attached image.

• How can I fix it?

• I would like to continue with the Light Theme, because the others contain color combinations I don't like; thank you in advance.

• I use the Light Theme also, but I have Black Text.

• Check what Windows-7 Theme you are using in the Control Panel under Personalization:

• Control Panel\All Control Panel Items\Personalization

~Pj

Does it make a difference if the menu bar is hidden?

You can also try to toggle this pref on the about:config page.

• browser.tabs.drawInTitlebar

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

• http://kb.mozillazine.org/about:config