[Affected versions]: - 63.0.3 - 64.0b11 (DevEdition) - 65.0a1 [Affected platforms]: - Windows 10 x64 - Ubuntu 16.04 x32 - macOS 10.13 [Steps to reproduce]: 1. Go to https://www.facebook.com/ 2. Click on the “Forgotten account?” button 3. Observe the “Phone number or email address” label [Expected result]: - The label has no visibility problem, it is obvious and clear. [Actual result]: - The label should be more visible. [Regression range]: - This looks like a very old regression, I could only restrain it to the following: Last good revision: 7bce868864bf (2013-01-09) First bad revision: a207f33adc1a (2013-01-25) Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=7bce868864bf&tochange=a207f33adc1a [Additional Notes]: - When in focus, the labels are almost indecipherable. - I could see differences also on Pinterest, compared with Chrome, but the labels are visible enough for the user. - Note other affected Facebook areas: https://drive.google.com/file/d/1FWHcA31vY-WAmXOPt-WRMc1KtsWGdBbk/view?usp=sharing