Created attachment 8726698 [details] Arrows with transparency in dark theme User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 Build ID: 20160210153822 Steps to reproduce: 1. Open devtools and inspektor 2. Click on any "ev" node to get the events popup (see screenshot) Actual results: The letters from the below html shines through the transparent arrow. See screenshot Expected results: Should be more like in the light theme where the text does not shine trough in such a way. Seems like the transparency for dark theme is set higher than in the light theme.
It's because the arrow as the same transparency as the background tooltip.
Created attachment 8726721 [details] Too_high_transparency_dark_theme.png Besides of this or maybe due to this: Transparency of the background popup seems to be too high in the dark theme anyway.
Created attachment 8726729 [details] Object_with_attributes.png If the looked at object in the popup has attributes (Array/Object not just plain String) then the transparency is way lower and it looks much better. See Screenshot
I think the opacity is the same in both themes, but it shows a bit more with the dark-theme indeed. Helen, do you mind taking a look at this and advising if we need to adjust the opacity of our tooltips?
I'm marking this as WONTFIX because of Bug 1258365.