Reproduced with Firefox 42 beta 1 (buildID: 20150921151815) on Windows 7 32bit. STR: 1. Open any page, e.g: http://www.golem.de/ 2. Press the doorhanger from the url bar (the icon representing an earth globe). 3. Hover over the ">" button. ER: The hover animation is done correctly, while the background color of the ">" button is grey when hovering over it. AR: The background color of the ">" button is not totally grey when hovering over it. Please see attachment "issue.png". Note: The background color of the "More Information" and "Disable protection for this site" buttons is partially grey. Please see attachment "buttons.png". It is expected?

(In reply to Camelia Badau, QA [:cbadau] from comment #0) > Created attachment 8664764 [details] > issue.png > > Reproduced with Firefox 42 beta 1 (buildID: 20150921151815) on Windows 7 > 32bit. > > STR: > 1. Open any page, e.g: http://www.golem.de/ > 2. Press the doorhanger from the url bar (the icon representing an earth > globe). > 3. Hover over the ">" button. > > ER: The hover animation is done correctly, while the background color of the > ">" button is grey when hovering over it. > > AR: The background color of the ">" button is not totally grey when hovering > over it. Please see attachment "issue.png". Which bit isn't grey that you'd expect to be grey? I'm confused, the button looks grey on the screenshot... > Note: The background color of the "More Information" and "Disable protection > for this site" buttons is partially grey. Please see attachment > "buttons.png". It is expected? This looks OK to me for now.

I've tested on latest Nightly 50.0a1 (buildID: 20160710030217) on Windows 7 and I have the following mention: 1. "The background color of the "More Information" and "Disable protection for this site" buttons is partially grey." - it looks OK now 2. "The background color of the ">" button is not totally grey when hovering over it." - it seems that the issue is reproducible only on my machine, on other machines it look OK. On my machine, the background color of the ">" button has multiple gray scales and a vertical gray line is displayed between them. It may be a hardware issue. I will mark it RESOLVED WORKSFORME. If I will reproduce the issue on another machine or if anyone else will ran into this, we'll reopen it.