Reproducible: always Steps To reproduce: 1. Start Nightly 2. Select Explorer before Browser window is shown Actual Results: Although Nightly is inactive, the background color of the tab trip indicates as active state See attached screenshot Expected Results: the background color of the tab trip should indicate as inactive state

Hi Alice, I cannot reproduce this issue on latest Nightly 57.0a1, build ID 20170920220431. Could you please try this on your side to see if this is still reproducible on latest Nightly?

(In reply to Brindusa Tot[:brindusat] from comment #2) > Hi Alice, I cannot reproduce this issue on latest Nightly 57.0a1, build ID > 20170920220431. Could you please try this on your side to see if this is > still reproducible on latest Nightly? I can still reproduce the problem on Latest Nightly57.0a1. Build ID 20170921100141 User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 STR: 1. Launch File Explorer (or any other application) 2. Launch Nightly 3. Immediately after doing step2, focus on the File Explorer Actual Results: Nightly toolbar background color is Windows Accent color. And Menu bar is black text(if Menu bar is enabled) Expected Results: Nightly toolbar background color should be gray and Menu bar should also be gray text.