I hope that helps! Got a Computer Question or Problem? Ask Dennis! To change the new Firefox Quantum default black tabs back to the gray color, do the following: How to Fix: Change Firefox Quantum Black Tabs to Gray I'm happy to say I came across an easy solution.
I did a bit of digging on this as I wasn't sure how to change the Firefox tab colors, either.
I am also not a fan of the black tabs in Firefox and am in the same boat as you - the gray Firefox tabs just seem like the 'right fit'! I have looked in the program preferences but can't find a way to change it back. Previously the Firefox tabs were gray in color and I prefer that to the black tabs. One of the annoying features of the Firefox upgrade is the black tabs (black background) near the top of the page. My system recently upgraded to the newest version of Firefox Quantum (version 57), and so far it is much faster than the previous versions.
