Top border is all +black, cannot read file, edit view, etc.
OK, Updated FF64 to Ver. 57. Top tool bar with Files, views, tools, help, etc is black with dark gray lettering. Cannot change it. No it is NOT my windows 10 pro default All tabs except active tab are black with gray lettering.
Finally deduced : CULPRIT = COLORFUL TABS Disabled above add-on/extension and all is better
OK, Updated FF64 to Ver. 57.
Top tool bar with Files, views, tools, help, etc is black with dark gray lettering.
Cannot change it.
No it is NOT my windows 10 pro default
All tabs except active tab are black with gray lettering.
Finally deduced : CULPRIT = COLORFUL TABS
Disabled above add-on/extension and all is better